Remove unused import (#715)

* remove unused import

* remove blank line

Author: Massimiliano Pippi

.github/workflows/docs.yaml

@@ -81,5 +81,4 @@ jobs:
         if: github.event_name == 'push'
         env:
           REMOTE: https://x-access-token:${{secrets.GITHUB_TOKEN}}@github.com/${{github.repository}}.git
-
         run: python docs/build.py

docs/build.py

@@ -18,7 +18,6 @@
 import unittest
 import subprocess
 
-import semver
 from git import Repo