Revert "[test] pass TARGET_THUMB_STRICT and -O3 to clang"

This reverts commit 42158507932ca75e8ea69ecdf3abc2097b8387b5.
build: Update supported languages

* Remove Uyghur, which has no active maintainer in the past 6 months
* Add Kurdish

Change-Id: Ic79ca973727885a2498c59730ebec4faee821369

Conflicts:
	target/product/languages_full.mk
	target/product/locales_full.mk