cpplint: Remove many unnecessary NOLINT

Now that we updated to upstream cpplint, a lot of these NOLINTs are no
longer necessary.

Bug: 68951293
Change-Id: If8ed5ffe89727f313f907a214b6d8fd2a2eddbad
diff --git a/runtime/base/mutex.cc b/runtime/base/mutex.cc
index 877f052..3adebe7 100644
--- a/runtime/base/mutex.cc
+++ b/runtime/base/mutex.cc
@@ -584,7 +584,7 @@
 #if ART_USE_FUTEXES
     , state_(0), num_pending_readers_(0), num_pending_writers_(0)
 #endif
-{  // NOLINT(whitespace/braces)
+{
 #if !ART_USE_FUTEXES
   CHECK_MUTEX_CALL(pthread_rwlock_init, (&rwlock_, nullptr));
 #endif