style: fix trailing new lines + spaces (#598)

.github/workflows/ci.yml

@@ -39,4 +39,3 @@ jobs:
         uses: actions/checkout@main
       - name: Ensure sorted
         run: python3 ensure_sorted.py
-

check.sh

@@ -10,7 +10,6 @@ FDROID_SETTINGS=$( \
             | sed "s/)].*/;/g" \
             )
 
-
 FAILED=0
 
 while IFS=';' read -ra TOK; do

ensure_sorted.py

@@ -99,6 +99,5 @@ def main():
     if not all_sorted:
         exit(2)
 
-
 if __name__ == "__main__":
     main()