Merge "Remove redundant -Wall,-Wextra, which are already enabled globally" into main am: 14a218aabc am: a965f8ead5

Original change: https://android-review.googlesource.com/c/platform/frameworks/compile/mclinker/+/3261034

Change-Id: I03b3ca5d547f869e7cf0d352c1c804128207d2bd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>