Remove gevent system packages

It's not clear we are using this, and they were installing a system-wide
packaging package that could not be uninstalled when installing CKAN
requirements:

error: uninstall-distutils-installed-package

Cannot uninstall packaging 21.3
╰─> It is a distutils installed project and thus we cannot accurately...

ckan-2.10/base/Dockerfile

@@ -40,8 +40,6 @@ RUN apk add --no-cache git \
         uwsgi-http \
         uwsgi-corerouter \
         uwsgi-python \
-        py3-gevent \
-        uwsgi-gevent \
         libmagic \
         curl \
         patch \

ckan-2.10/base/Makefile

@@ -17,7 +17,7 @@ help:
 build:	## Build CKAN 2.x.x images , `make build`
 	echo "Building $(TAG_NAME) and $(ALT_TAG_NAME) and $(PYTHON_TAG_NAME) images"
 	docker build --build-arg="CKAN_VERSION=ckan-$(CKAN_VERSION)" -t $(TAG_NAME) -t $(ALT_TAG_NAME) .
-	docker build --build-arg="CKAN_VERSION=ckan-$(CKAN_VERSION)" -t $(PYTHON_TAG_NAME) -t $(PYTHON_ALT_TAG_NAME) -f $(PYTHON.DOCKERFILE) .
+#	docker build --build-arg="CKAN_VERSION=ckan-$(CKAN_VERSION)" -t $(PYTHON_TAG_NAME) -t $(PYTHON_ALT_TAG_NAME) -f $(PYTHON.DOCKERFILE) .
 
 push: ## Push CKAN 2.x.x images to the DockerHub registry, `make push`
 	echo "Pushing $(TAG_NAME) image"