Remove bower from prepare-release

bin/prepare-release

@@ -12,12 +12,6 @@ CURRENT_PACKAGE_JSON_VERSION=$(cat package.json \
   | awk -F: '{ print $2 }' \
   | sed 's/[",]//g' \
   | tr -d '[[:space:]]')
-CURRENT_BOWER_JSON_VERSION=$(cat bower.json \
-  | grep version \
-  | head -1 \
-  | awk -F: '{ print $2 }' \
-  | sed 's/[",]//g' \
-  | tr -d '[[:space:]]')
 
 # Build xterm.js into `dist`
 export BUILD_DIR=dist
@@ -26,9 +20,8 @@ npm run build
 # Update AUTHORS file
 sh bin/generate-authors
 
-# Update version in package.json and bower.json
+# Update version in package.json
 sed -i "s/\"version\": \"$CURRENT_PACKAGE_JSON_VERSION\"/\"version\": \"$NEW_VERSION\"/g" package.json
-sed -i "s/\"version\": \"$CURRENT_BOWER_JSON_VERSION\"/\"version\": \"$NEW_VERSION\"/g" bower.json
 
 git commit -S -s -a -m "Bump version to $NEW_VERSION"
 git tag $NEW_VERSION