Revert "core/jni/android/graphics: Cache copy of pre-scaled Bitmaps"

This reverts commit f189a358db81010571b5ca173eaa8c18bb309b0c.
Revert "Vectorize bitmap operations on A15 too"

This reverts commit 6c117bb00bc238b7df1bea423e04b5c5de2c27a2.
Revert "frameworks/base: vectorize Bitmap operations"

This reverts commit 664e9c25a99a98ec17e5a022d689c3309417710c.