Remove now passing test from nr2 exclude list

Those tests are using closure which are now fixed.

gcc/testsuite/ChangeLog:

	* rust/compile/nr2/exclude: Remove closure environment capture related
	tests.

Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

gcc/testsuite/rust/compile/nr2/exclude

@@ -11,7 +11,6 @@ cfg1.rs
 cfg3.rs
 cfg4.rs
 cfg5.rs
-closure_no_type_anno.rs
 complex-path1.rs
 const-issue1440.rs
 const_generics_3.rs
@@ -47,7 +46,6 @@ issue-1981.rs
 issue-2036.rs
 issue-2043.rs
 issue-2136-2.rs
-issue-2142.rs
 issue-2238.rs
 issue-2330.rs
 issue-2479.rs