Fix bad comment in class_linker

(cherry picked from commit ff5a372be9b5ecaa4c3a9887f064a8a98069d036)

Change-Id: I04b2156fbd85929b082097e6faab8097552744c3
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index c4855bd..617f4bd 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -832,8 +832,6 @@
       // There's no point in going forward and eventually try to regenerate the
       // file if we couldn't remove the obsolete one. Mostly likely we will fail
       // with the same error when trying to write the new file.
-      // In case the clean up failure is due to permission issues it's *mandatory*
-      // to stop to avoid regenerating under the wrong user.
       // TODO: should we maybe do this only when we get permission issues? (i.e. EACCESS).
       if (obsolete_file_cleanup_failed) {
         return false;