remove unneeded sysctl changes in sysvinit-redhat init script

Docker-DCO-1.1-Signed-off-by: Adam Miller <admiller@redhat.com> (github: maxamillion)
Merge pull request #4125 from maxamillion/maxamillion/add_redhat_sysvinit

Remove unneeded sysctl changes in sysvinit-redhat init script