libprocessgroup: Remove unused includes; add missing ones

No functional changes.

Bug: 346584259
Test: m
Change-Id: I68fa51f86b6baaa34fb2cdfdc16a4d1ff61e1e5f
diff --git a/libprocessgroup/task_profiles.cpp b/libprocessgroup/task_profiles.cpp
index 0c2252b..4870548 100644
--- a/libprocessgroup/task_profiles.cpp
+++ b/libprocessgroup/task_profiles.cpp
@@ -17,7 +17,9 @@
 //#define LOG_NDEBUG 0
 #define LOG_TAG "libprocessgroup"
 
+#include <dirent.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <task_profiles.h>
 #include <string>