fix: restore deploy without variable

Maybe this will fix the deploy again

Author: GerryFerdinandus

.travis.yml

@@ -51,12 +51,12 @@ before_deploy:
 
 deploy:
   provider: releases
-  prerelease: $PROJECT_PRERELEASE
+  prerelease: false
   skip_cleanup: true
   api_key:
     secure: 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
   file: "${RELEASE_ZIP_FILE}"
   on:
     tags: true 
-    repo: $PROJECT_REPO
+    repo: GerryFerdinandus/bittorrent-tracker-editor