remove 'retouch' ASLR support

Older versions of android supported an ASLR system where binaries were
randomly twiddled at OTA install time.  Remove support for this; we
now use the ASLR support in the linux kernel.

Change-Id: I8348eb0d6424692668dc1a00e2416fbef6c158a2
diff --git a/updater/install.c b/updater/install.c
index 2cf00bf..e85ba50 100644
--- a/updater/install.c
+++ b/updater/install.c
@@ -1419,7 +1419,7 @@
     v->type = VAL_BLOB;
 
     FileContents fc;
-    if (LoadFileContents(filename, &fc, RETOUCH_DONT_MASK) != 0) {
+    if (LoadFileContents(filename, &fc) != 0) {
         free(filename);
         v->size = -1;
         v->data = NULL;