perf: remove Before ordering constraint on dde-session-daemon from XSettings1 service

Remove the Before=org.dde.session.Daemon1.service ordering constraint from the
XSettings1 D-Bus service unit. This allows dde-session-daemon to start in
parallel with XSettings1, reducing startup serialization on the critical path.

移除 XSettings1 D-Bus 服务单元中对 dde-session-daemon 的 Before 排序约束，
使得 dde-session-daemon 可以与 XSettings1 并行启动，减少关键路径上的串行化等待。

Log: perf: remove Before ordering constraint on dde-session-daemon from XSettings1 service
Change-Id: I4fec93594441957f8ef21f5bcd1b43f0c228568c

Author: yixinshark

src/plugin-qt/xsettings/misc/org.deepin.dde.XSettings1.service

@@ -7,8 +7,6 @@ CollectMode=inactive-or-failed
 PartOf=dde-session-pre.target
 Before=dde-session-pre.target
 
-Before=org.dde.session.Daemon1.service
-
 [Service]
 Type=dbus
 BusName=org.deepin.dde.XSettings1