[docs] Document which online sync-ups are no longer happening (#89361)

Some of the online sync-ups on our Getting Involved page seem to no
longer be happening. Document them as no longer happening, so that
people don't get confused when dialing in to one of these.

Author: kbeyls

llvm/docs/GettingInvolved.rst

@@ -158,11 +158,6 @@ what to add to your calendar invite.
      - `ics <https://calendar.google.com/calendar/ical/lowrisc.org_0n5pkesfjcnp0bh5hps1p0bd80%40group.calendar.google.com/public/basic.ics>`__
        `gcal <https://calendar.google.com/calendar/b/1?cid=bG93cmlzYy5vcmdfMG41cGtlc2ZqY25wMGJoNWhwczFwMGJkODBAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ>`__
      - `Minutes/docs <https://docs.google.com/document/d/1G3ocHm2zE6AYTS2N3_3w2UxFnSEyKkcF57siLWe-NVs>`__
-   * - Scalable Vectors and Arm SVE
-     - Monthly, every 3rd Tuesday
-     - `ics <https://calendar.google.com/calendar/ical/bjms39pe6k6bo5egtsp7don414%40group.calendar.google.com/public/basic.ics>`__
-       `gcal <https://calendar.google.com/calendar/u/0/[email protected]>`__
-     - `Minutes/docs <https://docs.google.com/document/d/1UPH2Hzou5RgGT8XfO39OmVXKEibWPfdYLELSaHr3xzo/edit>`__
    * - ML Guided Compiler Optimizations
      - Monthly
      -
@@ -176,10 +171,6 @@ what to add to your calendar invite.
      - Weekly, on Wednesday
      -
      - `Minutes/docs <https://docs.google.com/document/d/1fOSRdyZR2w75D87yU2Ma9h2-_lEPL4NxvhJGJd-s5pk/edit#heading=h.mulvhjtr8dk9>`__
-   * - `MLIR <https://mlir.llvm.org>`__ design meetings
-     - Weekly, on Thursdays
-     -
-     - `Minutes/docs <https://docs.google.com/document/d/1y_9f1AbfgcoVdJh4_aM6-BaSHvrHl8zuA5G4jv_94K8/edit#heading=h.cite1kolful9>`__
    * - flang
      - Multiple meeting series, `documented here <https://github.com/llvm/llvm-project/blob/main/flang/docs/GettingInvolved.md#calls>`__
      -
@@ -192,19 +183,10 @@ what to add to your calendar invite.
      - Every 4 weeks on Tuesdays
      - `ics <http://lists.llvm.org/pipermail/llvm-dev/attachments/20201103/a3499a67/attachment-0001.ics>`__
      - `Minutes/docs <https://docs.google.com/document/d/17U-WvX8qyKc3S36YUKr3xfF-GHunWyYowXbxEdpHscw>`__
-   * - Vector Predication
-     - Every 2 weeks on Tuesdays, 3pm UTC
-     -
-     - `Minutes/docs <https://docs.google.com/document/d/1q26ToudQjnqN5x31zk8zgq_s0lem1-BF8pQmciLa4k8/edit?usp=sharing>`__
    * - LLVM Pointer Authentication
      - Every month on Mondays
      - `ics <https://calendar.google.com/calendar/ical/fr1qtmrmt2s9odufjvurkb6j70%40group.calendar.google.com/public/basic.ics>`__
      - `Minutes/docs <https://discourse.llvm.org/t/llvm-pointer-authentication-sync-ups/62661>`__
-   * - MemorySSA in LLVM
-     - Every 8 weeks on Mondays
-     - `ics <https://calendar.google.com/calendar/ical/c_1mincouiltpa24ac14of14lhi4%40group.calendar.google.com/public/basic.ics>`__
-       `gcal <https://calendar.google.com/calendar/embed?src=c_1mincouiltpa24ac14of14lhi4%40group.calendar.google.com>`__
-     - `Minutes/docs <https://docs.google.com/document/d/1-uEEZfmRdPThZlctOq9eXlmUaSSAAi8oKxhrPY_lpjk/edit#>`__
    * - LLVM Embedded Toolchains
      - Every 4 weeks on Thursdays
      - `ics <https://drive.google.com/file/d/1uNa-PFYkhAfT83kR2Nc4Fi706TAQFBEL/view?usp=sharing>`__
@@ -222,16 +204,50 @@ what to add to your calendar invite.
      - Every 2 weeks on Mondays
      - `gcal <https://calendar.google.com/calendar/u/0?cid=c3ljbC5sbHZtLndnQGdtYWlsLmNvbQ>`__
      - `Meeting details/agenda <https://docs.google.com/document/d/1ivYDSn_5ChTeiZ7TiO64WC_jYJnGwAUiT9Ngi9cAdFU/edit?usp=sharing>`__
-   * - GlobalISel
-     - Every 2nd Tuesday of the month
-     - `gcal <https://calendar.google.com/calendar/u/0?cid=ZDcyMjc0ZjZiZjNhMzFlYmE3NTNkMWM2MGM2NjM5ZWU3ZDE2MjM4MGFlZDc2ZjViY2UyYzMwNzVhZjk4MzQ4ZEBncm91cC5jYWxlbmRhci5nb29nbGUuY29t>`__
-     - `Meeting details/agenda <https://docs.google.com/document/d/1Ry8O4-Tm5BFj9AMjr8qTQFU80z-ptiNQ62687NaIvLs/edit?usp=sharing>`__
    * - Floating Point Working Group
      - Every 3rd Wednesday of the month
      - `ics <https://calendar.google.com/calendar/ical/02582507bac79d186900712566ec3fc69b33ac24d7de0a8c76c7b19976f190c0%40group.calendar.google.com/private-6e35506dbfe13812e92e9aa8cd5d761d/basic.ics>`__
        `gcal <https://calendar.google.com/calendar/u/0?cid=MDI1ODI1MDdiYWM3OWQxODY5MDA3MTI1NjZlYzNmYzY5YjMzYWMyNGQ3ZGUwYThjNzZjN2IxOTk3NmYxOTBjMEBncm91cC5jYWxlbmRhci5nb29nbGUuY29t>`__
      - `Meeting details/agenda: <https://docs.google.com/document/d/1QcmUlWftPlBi-Wz6b6PipqJfvjpJ-OuRMRnN9Dm2t0c>`__
 
+Past online sync-ups
+^^^^^^^^^^^^^^^^^^^^
+
+Some online sync-ups are no longer happening. We keep pointing to them here to
+keep track of the meeting notes and in case anyone would want to revive them in
+the future.
+
+.. list-table:: LLVM no-longer-happening sync-up calls
+   :widths: 25 25 25 25
+   :header-rows: 1
+
+   * - Topic
+     - Frequency
+     - Calendar link
+     - Minutes/docs link
+   * - Scalable Vectors and Arm SVE
+     - Monthly, every 3rd Tuesday
+     - `ics <https://calendar.google.com/calendar/ical/bjms39pe6k6bo5egtsp7don414%40group.calendar.google.com/public/basic.ics>`__
+       `gcal <https://calendar.google.com/calendar/u/0/[email protected]>`__
+     - `Minutes/docs <https://docs.google.com/document/d/1UPH2Hzou5RgGT8XfO39OmVXKEibWPfdYLELSaHr3xzo/edit>`__
+   * - MemorySSA in LLVM
+     - Every 8 weeks on Mondays
+     - `ics <https://calendar.google.com/calendar/ical/c_1mincouiltpa24ac14of14lhi4%40group.calendar.google.com/public/basic.ics>`__
+       `gcal <https://calendar.google.com/calendar/embed?src=c_1mincouiltpa24ac14of14lhi4%40group.calendar.google.com>`__
+     - `Minutes/docs <https://docs.google.com/document/d/1-uEEZfmRdPThZlctOq9eXlmUaSSAAi8oKxhrPY_lpjk/edit#>`__
+   * - GlobalISel
+     - Every 2nd Tuesday of the month
+     - `gcal <https://calendar.google.com/calendar/u/0?cid=ZDcyMjc0ZjZiZjNhMzFlYmE3NTNkMWM2MGM2NjM5ZWU3ZDE2MjM4MGFlZDc2ZjViY2UyYzMwNzVhZjk4MzQ4ZEBncm91cC5jYWxlbmRhci5nb29nbGUuY29t>`__
+     - `Meeting details/agenda <https://docs.google.com/document/d/1Ry8O4-Tm5BFj9AMjr8qTQFU80z-ptiNQ62687NaIvLs/edit?usp=sharing>`__
+   * - Vector Predication
+     - Every 2 weeks on Tuesdays, 3pm UTC
+     -
+     - `Minutes/docs <https://docs.google.com/document/d/1q26ToudQjnqN5x31zk8zgq_s0lem1-BF8pQmciLa4k8/edit?usp=sharing>`__
+   * - `MLIR <https://mlir.llvm.org>`__ design meetings
+     - Weekly, on Thursdays
+     -
+     - `Minutes/docs <https://docs.google.com/document/d/1y_9f1AbfgcoVdJh4_aM6-BaSHvrHl8zuA5G4jv_94K8/edit#heading=h.cite1kolful9>`__
+
 .. _office-hours:
 
 Office hours