Remove unused varying type param from GrGLSLShaderBuilder texture methods.

Change-Id: Icbe887266d201bc6d64555f0e793765bf641e4b6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/262230
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/ccpr/GrCCClipProcessor.cpp b/src/gpu/ccpr/GrCCClipProcessor.cpp
index 5bf6a57..badbaeb 100644
--- a/src/gpu/ccpr/GrCCClipProcessor.cpp
+++ b/src/gpu/ccpr/GrCCClipProcessor.cpp
@@ -73,7 +73,7 @@
                        atlasTransform, atlasTransform);
 
         f->codeAppend ("coverage = ");
-        f->appendTextureLookup(args.fTexSamplers[0], "texcoord", kHalf2_GrSLType);
+        f->appendTextureLookup(args.fTexSamplers[0], "texcoord");
         f->codeAppend (".a;");
 
         if (proc.fIsCoverageCount) {