fs_config.c: Remove obsolete reference to /system/bin/pppd-ril

Codesearch finds no reference to this in the Android tree. It was
added in 2010 in commit bbf1c64527dde837a236b4d6b9f75343adbca119.

Change-Id: I8cd1153912b78b4b23b8f5ba2577a58c5c49e316
diff --git a/libcutils/fs_config.c b/libcutils/fs_config.c
index d4994db..6d50adc 100644
--- a/libcutils/fs_config.c
+++ b/libcutils/fs_config.c
@@ -132,11 +132,10 @@
     { 00750, AID_ROOT,      AID_SHELL,     0, "data/nativetest/*" },
     { 00750, AID_ROOT,      AID_SHELL,     0, "data/nativetest64/*" },
 
-    /* the following three files are INTENTIONALLY set-uid, but they
+    /* the following two 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/procmem" },
-    { 04770, AID_ROOT,      AID_RADIO,     0, "system/bin/pppd-ril" },
 
     /* the following files have enhanced capabilities and ARE included in user builds. */
     { 00750, AID_ROOT,      AID_SHELL,     CAP_MASK_LONG(CAP_SETUID) | CAP_MASK_LONG(CAP_SETGID), "system/bin/run-as" },