feat: "remove_flags" only used in the scope of "build_message"

plugins/git-commit/git-commit.plugin.zsh

@@ -24,19 +24,19 @@ _git_commit_flags=(
   '-as'
 )
 
-remove_flags() {
+build_message() {
+  local argv=("$@")
+  local argc=${#@}
+  local i=1
+
+  remove_flags() {
     local regex=$(
       IFS="|"
       echo "${_git_commit_flags[*]}"
     )
 
     echo $(sed -E "s/\s($regex)\s|\s($regex)$//g" <<<"$1")
-}
+  }
-
-build_message() {
-  local argv=("$@")
-  local argc=${#@}
-  local i=1
 
   while [[ $i -lt $argc ]]; do
     local flag="${argv[$i]}"