Remove version checks from tag script

Not needed since we're using the version from scm.

scripts/tag_version

@@ -16,7 +16,6 @@ import toot
 
 from datetime import date
 from os import path
-from pkg_resources import get_distribution
 
 path = path.join(path.dirname(path.dirname(path.abspath(__file__))), "changelog.yaml")
 with open(path, "r") as f:
@@ -33,15 +32,6 @@ if not changelog_item:
     print(f"Version `{version}` not found in changelog.", file=sys.stderr)
     sys.exit(1)
 
-if toot.__version__ != version:
-    print(f"toot.__version__ is `{toot.__version__}`, expected {version}.", file=sys.stderr)
-    sys.exit(1)
-
-dist_version = get_distribution('toot').version
-if dist_version != version:
-    print(f"Version in setup.py is `{dist_version}`, expected {version}.", file=sys.stderr)
-    sys.exit(1)
-
 release_date = changelog_item["date"]
 description = changelog_item.get("description")
 changes = changelog_item["changes"]