ldflags_dirs is not needed for Python and causes failures

Ensuring that all dirs in LDFLAGS exist is only needed for Ruby due to its `configure` requirements.
If some LDFLAGS entries point to a nonexisting path to which the user doesn't have permission. this causes a build failure.

plugins/python-build/bin/python-build

@@ -1516,21 +1516,6 @@ use_xcode_sdk_zlib() {
   fi
 }
 
-# Ensure that directories listed in LDFLAGS exist
-build_package_ldflags_dirs() {
-  local arg dir
-  set - $LDFLAGS
-  while [ $# -gt 0 ]; do
-    dir=""
-    case "$1" in
-    -L  ) dir="$2" ;;
-    -L* ) dir="${1#-L}" ;;
-    esac
-    [ -z "$dir" ] || mkdir -p "$dir"
-    shift 1
-  done
-}
-
 build_package_enable_shared() {
     package_option python configure --enable-shared
 }