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: 75f21916 ("shader: Don't emit gl_FragCoord layout qualifier on GLES and emulate pixel_center_integer")