No longer include llerrorlegacy.h. Updated llstl to include deletion utilites.

indra/newview/llpatchvertexarray.cpp

@@ -124,7 +124,7 @@ void LLPatchVertexArray::create(U32 surface_width, U32 patch_width, F32 meters_p
 	{
 		// init() and some other things all want to deref these
 		// pointers, so this is serious.
-		llerrs << "mRenderLevelp or mRenderStridep was NULL; we'd crash soon." << llendl;
+		LL_ERRS() << "mRenderLevelp or mRenderStridep was NULL; we'd crash soon." << LL_ENDL;
 		return;
 	}