Remove unused variable

Clang trunk will warn about this. The variable's constructor doesn't
have side-effect and it has a trivial destructor.

Bug: skia:
Change-Id: I4f20904fef2fd3617bb3062aa5ea71619e37c06c
Reviewed-on: https://skia-review.googlesource.com/60660
Commit-Queue: Benjamin Kramer <kramerb@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed