shader: remove unused variable

This buffer was introduced, but never used. Fixes a warning.

While we're at it, fixup the lack of EOL at EOF.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Fixes: 75f2191 ("shader: Don't emit gl_FragCoord layout qualifier on
                GLES and emulate pixel_center_integer")
Reviewed-By: <gert.wollny@collabora.com>

src/vrend_shader.c

@@ -813,7 +813,6 @@ iter_declaration(struct tgsi_iterate_context *iter,
    struct dump_ctx *ctx = (struct dump_ctx *)iter;
    int i;
    int color_offset = 0;
-   char name_prefix_buf[64];
    const char *name_prefix = "";
    bool add_two_side = false;
    unsigned mask_temp;