[Dockerfile]: Removes ckanext-harvest from the dockerfile

rootfs/Dockerfile

@@ -8,7 +8,7 @@ ENV PIP_SRC=${SRC_DIR}
 ENV GIT_URL=https://github.com/ckan/ckan.git
 ENV GIT_BRANCH=ckan-2.7.5
 ENV CKAN_SITE_URL=http://localhost:5000
-ENV CKAN__PLUGINS image_view text_view recline_view datastore datapusher harvest ckan_harvester archiver report envvars
+ENV CKAN__PLUGINS image_view text_view recline_view datastore datapusher archiver report envvars
 
 WORKDIR ${APP_DIR}
 
@@ -116,8 +116,6 @@ RUN pip install -e git+${GIT_URL}@${GIT_BRANCH}#egg=ckan && \
     pip install -r requirements.txt && \
     # Install CKAN envvars to support loading config from environment variables
     pip install -e git+https://github.com/okfn/ckanext-envvars.git#egg=ckanext-envvars && \
-    pip install -e git+https://github.com/ckan/[email protected]#egg=ckanext-harvest && \
-    pip install -r https://raw.githubusercontent.com/ckan/ckanext-harvest/v1.0.0/pip-requirements.txt && \
     pip install -e git+http://github.com/datagovuk/ckanext-report.git#egg=ckanext-report && \
     pip install --no-cache-dir -e git+https://github.com/ViderumGlobal/[email protected]#egg=ckanext-archiver && \
     pip install --no-cache-dir -r https://raw.githubusercontent.com/ViderumGlobal/ckanext-archiver/v1.0.6-ckan-2.7/requirements.txt && \