Remove "predefined" elements from Java layer.  Static elements continue to exist but are no longer treated as a special version of element.
diff --git a/libs/rs/rsScriptC.cpp b/libs/rs/rsScriptC.cpp
index 9d9eb1b..8230cbc 100644
--- a/libs/rs/rsScriptC.cpp
+++ b/libs/rs/rsScriptC.cpp
@@ -286,6 +286,10 @@
     char buf[256];
     String8 tmp;
 
+    str->append("struct vec2_s {float x; float y;};");
+    str->append("struct vec3_s {float x; float y; float z;};");
+    str->append("struct vec4_s {float x; float y; float z; float w;};");
+
     for (size_t ct=0; ct < MAX_SCRIPT_BANKS; ct++) {
         const Type *t = mConstantBufferTypes[ct].get();
         if (!t) {