Revert of added support for push_constant layout

src/sksl/SkSLUtil.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
  
 #ifndef SKSL_UTIL
 #define SKSL_UTIL
 
@@ skipping 82 matching lines @@
 int stoi(std::string s);
 
 double stod(std::string s);
 
 long stol(std::string s);
 
 NORETURN void sksl_abort();
 
 } // namespace
 
-#define ASSERT(x) SkASSERT(x)
-#define ASSERT_RESULT(x) SkAssertResult(x);
+#ifdef DEBUG
+#define ASSERT(x) assert(x)
+#define ASSERT_RESULT(x) ASSERT(x);
+#else
+#define ASSERT(x)
+#define ASSERT_RESULT(x) x
+#endif
 
 #ifdef SKIA
 #define ABORT(...) { SkDebugf(__VA_ARGS__); sksl_abort(); }
 #else
 #define ABORT(...) { sksl_abort(); }
 #endif
 
 #endif