Revert of Initial version of external_oes texture support and unit test

src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp

Index: src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp
diff --git a/src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp b/src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp
index fef4f0276f3c04d8e8ee9d5c13b024b7ec8f84dd..703e39d097dd52c16aaaf224cab9ecff38dfc9d5 100644
--- a/src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp
+++ b/src/gpu/gl/egl/GrGLCreateNativeInterface_egl.cpp
@@ -14,15 +14,7 @@
 
 static GrGLFuncPtr egl_get_gl_proc(void* ctx, const char name[]) {
     SkASSERT(nullptr == ctx);
-    GrGLFuncPtr ptr = eglGetProcAddress(name);
-    if (!ptr) {
-        if (0 == strcmp("eglQueryString", name)) {
-            return (GrGLFuncPtr)eglQueryString;
-        } else if (0 == strcmp("eglGetCurrentDisplay", name)) {
-            return (GrGLFuncPtr)eglGetCurrentDisplay;
-        }
-    }
-    return ptr;
+    return eglGetProcAddress(name);
 }
 
 const GrGLInterface* GrGLCreateNativeInterface() {