Remove unused transform parameter of ctfont_create_exact_copy

All instances were using this function with a nullptr transform
parameter. Remove the parameter and pass nullptr to CoreText call
instead.

Change-Id: Ic3b4d97a800758a45f1d771cbf9230e255775821
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/248936
Commit-Queue: Ben Wagner <bungeman@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed