Remove EnvironmentFile and Restart lines from unit files

These shouldn't be there, because the variables sourced by the
EnvironmentFile are only made available to the Exec commands in the unit
file.

pkg/deb/salt-api.service

@@ -3,12 +3,10 @@ Description=REST API for Salt
 After=network.target
 
 [Service]
-EnvironmentFile=/etc/default/salt-api
 LimitNOFILE=8192
 Type=notify
 NotifyAccess=all
 ExecStart=/usr/bin/salt-api
-Restart=$RESTART
 
 [Install]
 WantedBy=multi-user.target

pkg/deb/salt-master.service

@@ -3,12 +3,10 @@ Description=The Salt Master daemon
 After=network.target
 
 [Service]
-EnvironmentFile=/etc/default/salt-master
 LimitNOFILE=16384
 Type=notify
 NotifyAccess=all
 ExecStart=/usr/bin/salt-master
-Restart=$RESTART
 
 [Install]
 WantedBy=multi-user.target

pkg/deb/salt-minion.service

@@ -3,11 +3,9 @@ Description=The Salt Minion daemon
 After=network.target
 
 [Service]
-EnvironmentFile=/etc/default/salt-minion
 Type=notify
 LimitNOFILE=8192
 ExecStart=/usr/bin/salt-minion
-Restart=$RESTART
 
 [Install]
 WantedBy=multi-user.target

pkg/deb/salt-syndic.service

@@ -3,11 +3,9 @@ Description=The Salt Syndic daemon
 After=network.target
 
 [Service]
-EnvironmentFile=/etc/default/salt-syndic
 Type=notify
 LimitNOFILE=8192
 ExecStart=/usr/bin/salt-syndic
-Restart=$RESTART
 
 [Install]
 WantedBy=multi-user.target