intel: Remove extra FreeTextureImageBuffer() from glTexImage*.

The core code does this before calling in to us.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

src/mesa/drivers/dri/intel/intel_tex_image.c

@@ -414,7 +414,6 @@ intelTexImage(struct gl_context * ctx,
       }
    }
 
-   ctx->Driver.FreeTextureImageBuffer(ctx, texImage);
    assert(!intelImage->mt);
 
    if (intelObj->mt &&