remove node-red-admin

Author: vimagick

Diff for: Dockerfile

@@ -6,7 +6,6 @@ FROM alpine:3.12
 MAINTAINER EasyPi Software Foundation
 
 ARG NODERED_VERSION
-ARG NODERED_ADMIN_VERSION
 ARG NODERED_DASHBOARD_VERSION
 
 RUN set -xe \
@@ -25,7 +24,6 @@ RUN set -xe \
     && pip3 install --no-cache-dir rpi.gpio \
     && npm install -g --unsafe-perm \
         node-red@${NODERED_VERSION} \
-        node-red-admin@${NODERED_ADMIN_VERSION} \
         node-red-dashboard@${NODERED_DASHBOARD_VERSION} \
         node-red-node-email \
         node-red-node-feedparser \