i965/vec4: Remove unnecessary #includes from the generator.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

src/mesa/drivers/dri/i965/brw_vec4_generator.cpp

@@ -20,18 +20,10 @@
  * IN THE SOFTWARE.
  */
 
-#include <ctype.h>
 #include "glsl/glsl_parser_extras.h"
 #include "brw_vec4.h"
 #include "brw_cfg.h"
 
-extern "C" {
-#include "brw_eu.h"
-#include "main/macros.h"
-#include "program/prog_print.h"
-#include "program/prog_parameter.h"
-};
-
 using namespace brw;
 
 static void