fs_config.c: remove setuid from procrank

procrank only exists on userdebug/eng builds. For those builds,
procrank can be executed by running "su 0 procrank" instead of
relying on the binary being setuid root. This reduces the number
of setuid binaries on Android and allows for the deletion of
SELinux policy to support this.

Bug: 18342188
Change-Id: I982283f2e0f6fbe5efaffc08501c1ec175f65373
diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c
index 681c57f..970b386 100644
--- a/libcutils/fs_config.c
+++ b/libcutils/fs_config.c
@@ -126,11 +126,10 @@
     { 00644, AID_SYSTEM,    AID_SYSTEM,    0, "data/app-private/*" },
     { 00644, AID_APP,       AID_APP,       0, "data/data/*" },
 
-    /* the following five files are INTENTIONALLY set-uid, but they
+    /* the following four files are INTENTIONALLY set-uid, but they
      * are NOT included on user builds. */
     { 04750, AID_ROOT,      AID_SHELL,     0, "system/xbin/su" },
     { 06755, AID_ROOT,      AID_ROOT,      0, "system/xbin/librank" },
-    { 06755, AID_ROOT,      AID_ROOT,      0, "system/xbin/procrank" },
     { 06755, AID_ROOT,      AID_ROOT,      0, "system/xbin/procmem" },
     { 04770, AID_ROOT,      AID_RADIO,     0, "system/bin/pppd-ril" },