Remove automated docker cloud hooks

Dockerfile

@@ -5,8 +5,7 @@ RUN apk add --no-cache git python3 python3-dev py-pip build-base
 
 # build wheels in first image
 ADD . /tmp/src
-# restore the hooks directory so that the repository isn't marked as dirty
-RUN cd /tmp/src && git clean -xfd && git checkout -- hooks && git status
+RUN cd /tmp/src && git clean -xfd && git status
 RUN mkdir /tmp/wheelhouse \
  && cd /tmp/wheelhouse \
  && pip3 install wheel \

hooks/README.md

@@ -1,3 +0,0 @@
-# Docker build hooks
-
-These define our [custom hooks for docker automated builds](https://docs.docker.com/docker-hub/builds/advanced/#custom-build-phase-hooks)

hooks/post_push

@@ -1,8 +0,0 @@
-#!/bin/bash
-
-# when building jupyter/repo2docker:main
-# also push jupyter/repo2docker:1.2.3-3.abcd1234 (replace + with -)
-version=$(docker run $DOCKER_REPO:$DOCKER_TAG jupyter-repo2docker --version | sed s@+@-@)
-VERSION_IMAGE="$DOCKER_REPO:$version"
-docker tag $DOCKER_REPO:$DOCKER_TAG "$VERSION_IMAGE"
-docker push "$VERSION_IMAGE"