mac build: rm unused BUILDDIR

contrib/osx/make_osx

@@ -4,7 +4,6 @@ set -e
 
 # Parameterize
 PYTHON_VERSION=3.9.11
-BUILDDIR=/tmp/electrum-build
 PACKAGE=Electrum
 GIT_REPO=https://github.com/spesmilo/electrum
 
@@ -155,9 +154,6 @@ rm -rf ./dist
 
 git submodule update --init
 
-rm  -rf "$BUILDDIR" > /dev/null 2>&1
-mkdir "$BUILDDIR"
-
 info "generating locale"
 (
     if ! which msgfmt > /dev/null 2>&1; then