Remove unused return codes (#269)

Author: calcmogul

wpiformat/wpiformat/cmakeformat.py

@@ -15,7 +15,7 @@ def should_process_file(config_file, name):
     def run_batch(config_file, names):
         try:
             args = [sys.executable, "-m", "gersemi", "-i"]
-            returncode = subprocess.run(args + names).returncode
+            subprocess.run(args + names)
         except FileNotFoundError:
             print("Error: gersemi not found in PATH. Is it installed?", file=sys.stderr)
             return False

wpiformat/wpiformat/pyformat.py

@@ -15,7 +15,7 @@ def should_process_file(config_file, name):
     def run_batch(config_file, names):
         try:
             args = [sys.executable, "-m", "black", "-q"]
-            returncode = subprocess.run(args + names).returncode
+            subprocess.run(args + names)
         except FileNotFoundError:
             print("Error: black not found in PATH. Is it installed?", file=sys.stderr)
             return False