Warning fix
Warning fix

Removed unused variable

Change-Id: I9236d02e04fb58a081c608d16f4e1eadf81dde16
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/26949
Tested-by: Alexis Hétu <1c7141772178a7e80858c3db5052b328076f08f4@google.com>
Reviewed-by: Ben Clayton <1f693eb7158dc33015048c09d6712f74dabddf79@google.com>

google/swiftshader,google/swiftshader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,bkaradzic/SwiftShader