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/glsl/GrGLSLXferProcessor.cpp b/src/gpu/glsl/GrGLSLXferProcessor.cpp
index 2535a4b..6778d32 100644
--- a/src/gpu/glsl/GrGLSLXferProcessor.cpp
+++ b/src/gpu/glsl/GrGLSLXferProcessor.cpp
@@ -77,8 +77,7 @@
             }
 
             fragBuilder->codeAppendf("half4 %s = ", dstColor);
-            fragBuilder->appendTextureLookup(args.fDstTextureSamplerHandle, "_dstTexCoord",
-                                             kHalf2_GrSLType);
+            fragBuilder->appendTextureLookup(args.fDstTextureSamplerHandle, "_dstTexCoord");
             fragBuilder->codeAppend(";");
         } else {
             needsLocalOutColor = args.fShaderCaps->requiresLocalOutputColorForFBFetch();