relicensing: Remove map_clone

This removes the code added in rust-lang/rust-clippy#427

Author: Manishearth

clippy_lints/src/lib.rs

@@ -129,7 +129,6 @@ pub mod let_if_seq;
 pub mod lifetimes;
 pub mod literal_representation;
 pub mod loops;
-pub mod map_clone;
 pub mod map_unit_fn;
 pub mod matches;
 pub mod mem_forget;
@@ -346,7 +345,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
     reg.register_late_lint_pass(box needless_borrow::NeedlessBorrow);
     reg.register_late_lint_pass(box needless_borrowed_ref::NeedlessBorrowedRef);
     reg.register_late_lint_pass(box no_effect::Pass);
-    reg.register_late_lint_pass(box map_clone::Pass);
     reg.register_late_lint_pass(box temporary_assignment::Pass);
     reg.register_late_lint_pass(box transmute::Transmute);
     reg.register_late_lint_pass(
@@ -585,7 +583,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         loops::WHILE_IMMUTABLE_CONDITION,
         loops::WHILE_LET_LOOP,
         loops::WHILE_LET_ON_ITERATOR,
-        map_clone::MAP_CLONE,
         map_unit_fn::OPTION_MAP_UNIT_FN,
         map_unit_fn::RESULT_MAP_UNIT_FN,
         matches::MATCH_AS_REF,
@@ -745,7 +742,6 @@ pub fn register_plugins(reg: &mut rustc_plugin::Registry<'_>, conf: &Conf) {
         loops::FOR_KV_MAP,
         loops::NEEDLESS_RANGE_LOOP,
         loops::WHILE_LET_ON_ITERATOR,
-        map_clone::MAP_CLONE,
         matches::MATCH_BOOL,
         matches::MATCH_OVERLAPPING_ARM,
         matches::MATCH_REF_PATS,