glsl/xxd.py: fix imports
sys and string are unused, os is needed but not imported
fixes: 412472da5cb30b603e218b34893936cc70039ded
("glsl: Add utility to convert text files to C strings")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7034>
diff --git a/src/compiler/glsl/xxd.py b/src/compiler/glsl/xxd.py
index f8f57d7..23055ce 100644
--- a/src/compiler/glsl/xxd.py
+++ b/src/compiler/glsl/xxd.py
@@ -25,8 +25,7 @@
from __future__ import unicode_literals
import argparse
import io
-import string
-import sys
+import os
def get_args():
