libutils: Remove unused dependency on libprocessgroup_headers

Bug: 349105928
Test: m
Change-Id: Ic3e64b073c0ba087c3db19fb428c8c9132c8211f
diff --git a/libutils/Android.bp b/libutils/Android.bp
index 4877cae..305cbf0 100644
--- a/libutils/Android.bp
+++ b/libutils/Android.bp
@@ -33,14 +33,12 @@
         "libbase_headers",
         "libcutils_headers",
         "liblog_headers",
-        "libprocessgroup_headers",
         "libsystem_headers",
     ],
     export_header_lib_headers: [
         "libbase_headers",
         "libcutils_headers",
         "liblog_headers",
-        "libprocessgroup_headers",
         "libsystem_headers",
     ],
     export_include_dirs: ["include"],
diff --git a/libutils/Threads.cpp b/libutils/Threads.cpp
index 90ea29b..0b96ab0 100644
--- a/libutils/Threads.cpp
+++ b/libutils/Threads.cpp
@@ -37,11 +37,6 @@
 #include <log/log.h>
 
 #if defined(__ANDROID__)
-#include <processgroup/processgroup.h>
-#include <processgroup/sched_policy.h>
-#endif
-
-#if defined(__ANDROID__)
 # define __android_unused
 #else
 # define __android_unused __attribute__((__unused__))