lint: fix long lines & unused vars

BUG=None
TEST=`cros lint` passes

Change-Id: I1d6f56fd7d178530b52ae740671dc1fb35e534ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2189561
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Chris McDonald <cjmcdonald@chromium.org>
diff --git a/scripts/cros_sdk.py b/scripts/cros_sdk.py
index bb25c5f..c4142b0 100644
--- a/scripts/cros_sdk.py
+++ b/scripts/cros_sdk.py
@@ -527,7 +527,7 @@
   # Find the apache module directory, and make sure it has the modules we need.
   module_dirs = {}
   for g in PROXY_APACHE_MODULE_GLOBS:
-    for mod, so in apache_modules:
+    for _, so in apache_modules:
       for f in glob.glob(os.path.join(g, so)):
         module_dirs.setdefault(os.path.dirname(f), []).append(so)
   for apache_module_path, modules_found in module_dirs.items():