Re-enable executor_deinit1.swift test case

rdar://77658743

Author: aschwaighofer

test/Concurrency/Runtime/executor_deinit1.swift

@@ -9,11 +9,6 @@
 // https://bugs.swift.org/browse/SR-14461
 // UNSUPPORTED: linux
 
-// rdar://77658743
-// UNSUPPORTED: swift_test_mode_optimize
-// UNSUPPORTED: swift_test_mode_optimize_size
-
-
 // doesn't matter that it's bool identity function or not
 func boolIdentityFn(_ x : Bool) -> Bool { return x }