check-json: resolve TODO
diff --git a/pre_commit_hooks/check_json.py b/pre_commit_hooks/check_json.py
index 25dbfd9..6026270 100644
--- a/pre_commit_hooks/check_json.py
+++ b/pre_commit_hooks/check_json.py
@@ -14,8 +14,7 @@
         with open(filename, 'rb') as f:
             try:
                 json.load(f)
-            # TODO: need UnicodeDecodeError?
-            except (ValueError, UnicodeDecodeError) as exc:
+            except ValueError as exc:
                 print(f'{filename}: Failed to json decode ({exc})')
                 retval = 1
     return retval