treewide: remove dependencies on mapper.target

The mapper is dbus activated now, so these explicit dependency
declarations are unnecessary and redundant.

Change-Id: I097d42a26b1cbcc18a750416877643a756af5fba
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/xyz.openbmc_project.Network.service.in b/xyz.openbmc_project.Network.service.in
index e0193e3..40b7100 100644
--- a/xyz.openbmc_project.Network.service.in
+++ b/xyz.openbmc_project.Network.service.in
@@ -1,6 +1,5 @@
 [Unit]
 Description=Phosphor Network Manager
-After=obmc-mapper.target
 After=systemd-networkd.service
 
 [Service]