remove exception

Author: mj10021

src/tools/tidy/src/issues.txt

@@ -3225,7 +3225,6 @@
 "ui/nll/user-annotations/issue-55748-pat-types-constrain-bindings.rs",
 "ui/nll/user-annotations/issue-57731-ascibed-coupled-types.rs",
 "ui/numbers-arithmetic/issue-105626.rs",
-"ui/numbers-arithmetic/issue-8460-const.rs",
 "ui/numbers-arithmetic/issue-8460.rs",
 "ui/object-safety/issue-102762.rs",
 "ui/object-safety/issue-102933.rs",