Revert of Import functionality for new GL backend

src/gpu/gl/GrGLNoOpInterface.cpp

Index: src/gpu/gl/GrGLNoOpInterface.cpp
diff --git a/src/gpu/gl/GrGLNoOpInterface.cpp b/src/gpu/gl/GrGLNoOpInterface.cpp
index 396eaa46eada485f2f154d9765e936d020d4a1d0..f5880464557cc4e7f1e50c8715caffb962279a8f 100644
--- a/src/gpu/gl/GrGLNoOpInterface.cpp
+++ b/src/gpu/gl/GrGLNoOpInterface.cpp
@@ -140,12 +140,6 @@
                                               GrGLsizei count) {
 }
 
-GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawArraysInstanced(GrGLenum mode,
-                                                       GrGLint first,
-                                                       GrGLsizei count,
-                                                       GrGLsizei primcount) {
-}
-
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawBuffer(GrGLenum mode) {
 }
 
@@ -157,13 +151,6 @@
                                                 GrGLsizei count,
                                                 GrGLenum type,
                                                 const GrGLvoid* indices) {
-}
-
-GrGLvoid GR_GL_FUNCTION_TYPE noOpGLDrawElementsInstanced(GrGLenum mode,
-                                                         GrGLsizei count,
-                                                         GrGLenum type,
-                                                         const GrGLvoid* indices,
-                                                         GrGLsizei primcount) {
 }
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLEnable(GrGLenum cap) {
@@ -400,9 +387,6 @@
                                                        GrGLboolean normalized,
                                                        GrGLsizei stride,
                                                        const GrGLvoid* ptr) {
-}
-
-GrGLvoid GR_GL_FUNCTION_TYPE noOpGLVertexAttribDivisor(GrGLuint index, GrGLuint divisor) {
 }
 
 GrGLvoid GR_GL_FUNCTION_TYPE noOpGLViewport(GrGLint x,