libprocessgroup: Don't delegate to default constructor

Manually calling a defaulted default constructor from a another
constructor is superfluous, and can increase code size if the default
constructor is not otherwise used. There's nothing to delegate, so
remove the call.

Bug: 346584259
Test: m
Change-Id: Ia16aa041fdee7434587cf90645d7f95cba4e0d10
diff --git a/libprocessgroup/cgrouprc_format/cgroup_controller.cpp b/libprocessgroup/cgrouprc_format/cgroup_controller.cpp
index baf8f9d..56e67df 100644
--- a/libprocessgroup/cgrouprc_format/cgroup_controller.cpp
+++ b/libprocessgroup/cgrouprc_format/cgroup_controller.cpp
@@ -22,7 +22,7 @@
 
 CgroupController::CgroupController(uint32_t version, uint32_t flags, const std::string& name,
                                    const std::string& path)
-    : CgroupController() {
+{
     // strlcpy isn't available on host. Although there is an implementation
     // in licutils, libcutils itself depends on libcgrouprc_format, causing
     // a circular dependency.