Revert "Migrate as much as possible to pip and requirements.txt"

This reverts commit 982594a4a5.

lib/cherrypy/process/__init__.py

@@ -0,0 +1,14 @@
+"""Site container for an HTTP server.
+
+A Web Site Process Bus object is used to connect applications, servers,
+and frameworks with site-wide services such as daemonization, process
+reload, signal handling, drop privileges, PID file management, logging
+for all of these, and many more.
+
+The 'plugins' module defines a few abstract and concrete services for
+use with the bus. Some use tool-specific channels; see the documentation
+for each class.
+"""
+
+from cherrypy.process.wspbus import bus
+from cherrypy.process import plugins, servers