remove old multi references from install/update scripts

scripts/install.sh

@@ -9,9 +9,6 @@ if [ -f ${ROOT_DIR}/installed ]; then
     exit 1
 fi
 
-echo "Installing NPM packages..."
-(cd ${ROOT_DIR}/multi && npm install)
-
 echo "Installing Yarn packages..."
 (cd ${ROOT_DIR}/public/static && yarn install)
 

scripts/update.sh

@@ -11,9 +11,6 @@ else
     (cd ${ROOT_DIR} && composer install --dev)
 fi
 
-echo "Installing NPM packages..."
-(cd ${ROOT_DIR}/multi && npm install)
-
 echo "Installing Yarn packages..."
 (cd ${ROOT_DIR}/public/static && yarn install)