Remove SK_IGNORE_GL_TEXTURE_TARGET.

This code was added with "Use a struct for client GL texture handles"
https://codereview.chromium.org/1429863009. This define no longer
appears to be set anywhere, so it and the code it guards can be removed.

Change-Id: I80bb2a77b1f076143851c1d112937221eff2111a
Reviewed-on: https://skia-review.googlesource.com/3902
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
2 files changed