Revert "debug ALOGDs around thread locking"

This reverts commit 948abf99e166067046bc778afb96b594ccb22452.

Revert "fix logic error"

This reverts commit be7f1e9d34b6030d0cce51769c171f9f24818385.

Revert "fix typo"

This reverts commit 97c33bab42d8ba8d4407fc379b2870114c658805.

Revert "debugging round 2"

This reverts commit 4388998d7ce69ac6fbdb2e1fb9d7fddd96d9af34.

Revert "more debugging"

This reverts commit bbf2dd6b4f2b4e7eaf033495f86637948dd98ddd.

Revert "add bunch of debug prints to hwc_blank"

This reverts commit 8b26e5be89cc3009adc6fc85797ad0882fb38399.