mesa: remove MESA_FUNCTION

Just use __func__ in the two macros where it was used.

Reviewed-by: Neha Bhende <bhenden@vmware.com>

src/mesa/main/context.h

@@ -206,7 +206,7 @@ _mesa_inside_dlist_begin_end(const struct gl_context *ctx)
 #define FLUSH_VERTICES(ctx, newstate)				\
 do {								\
    if (MESA_VERBOSE & VERBOSE_STATE)				\
-      _mesa_debug(ctx, "FLUSH_VERTICES in %s\n", MESA_FUNCTION);\
+      _mesa_debug(ctx, "FLUSH_VERTICES in %s\n", __func__);	\
    if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES)		\
       vbo_exec_FlushVertices(ctx, FLUSH_STORED_VERTICES);	\
    ctx->NewState |= newstate;					\
@@ -225,7 +225,7 @@ do {								\
 #define FLUSH_CURRENT(ctx, newstate)				\
 do {								\
    if (MESA_VERBOSE & VERBOSE_STATE)				\
-      _mesa_debug(ctx, "FLUSH_CURRENT in %s\n", MESA_FUNCTION);	\
+      _mesa_debug(ctx, "FLUSH_CURRENT in %s\n", __func__);	\
    if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT)		\
       vbo_exec_FlushVertices(ctx, FLUSH_UPDATE_CURRENT);	\
    ctx->NewState |= newstate;					\

src/mesa/main/mtypes.h

@@ -5121,11 +5121,9 @@ struct gl_memory_info
 #ifdef DEBUG
 extern int MESA_VERBOSE;
 extern int MESA_DEBUG_FLAGS;
-# define MESA_FUNCTION __func__
 #else
 # define MESA_VERBOSE 0
 # define MESA_DEBUG_FLAGS 0
-# define MESA_FUNCTION "a function"
 #endif