CCTexture -addImageAsync iOS leak fix
Fixes addImageAsync iOS memory leak
Revert "Fixes addImageAsync iOS memory leak"

This reverts commit d75d842708f64ef7c0fe57c7d69b1a5e158057ec.
Revert "CCTexture -addImageAsync iOS leak fix"

This reverts commit 6a4fa3c85f85c2683c5c0d99f031fc95a9a419e2.
Fixes addImageAsync iOS memory leak