Remove the Require on the socket for the rpm

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
(cherry picked from commit 3cddda3bbb0cbc6f600b228b61e1110e0cf34c65)
Signed-off-by: Tibor Vass <tibor@docker.com>

contrib/init/systemd/docker.service.rpm

@@ -2,7 +2,6 @@
 Description=Docker Application Container Engine
 Documentation=https://docs.docker.com
 After=network.target
-Requires=docker.socket
 
 [Service]
 Type=notify