Revert of added support for PLS path rendering

src/gpu/glsl/GrGLSLFragmentShaderBuilder.h

Index: src/gpu/glsl/GrGLSLFragmentShaderBuilder.h
diff --git a/src/gpu/glsl/GrGLSLFragmentShaderBuilder.h b/src/gpu/glsl/GrGLSLFragmentShaderBuilder.h
index e998458158af65115066d10c521afca711dd1f5b..820cf17ae4fa67066659202824d617ea8d8da823 100644
--- a/src/gpu/glsl/GrGLSLFragmentShaderBuilder.h
+++ b/src/gpu/glsl/GrGLSLFragmentShaderBuilder.h
@@ -33,8 +33,7 @@ public:
      */
     enum GLSLFeature {
         kStandardDerivatives_GLSLFeature = 0,
-        kPixelLocalStorage_GLSLFeature = 1,
-        kLastGLSLFeature = kPixelLocalStorage_GLSLFeature
+        kLastGLSLFeature = kStandardDerivatives_GLSLFeature
     };
 
     /**
@@ -67,8 +66,6 @@ public:
     bool hasCustomColorOutput() const { return fHasCustomColorOutput; }
     bool hasSecondaryOutput() const { return fHasSecondaryOutput; }
 
-    void declAppendf(const char* fmt, ...);
-
 protected:
     bool fHasCustomColorOutput;
     bool fHasSecondaryOutput;