Revert "Raise number of nailgun uWSGI workers and sockets"

Revert necessary because of trying to set sysctl inside unprivileged container.
This reverts commit e2e1166a55f2dea80ed29dc37ebcaed93f8122c3.

Change-Id: I24672b00337d43f0b0bd181cc691b38696781c02
Merge "Revert "Raise number of nailgun uWSGI workers and sockets""