Revert "Mount /data with MS_NOEXEC"

This reverts commit 59eb85b64698aa9a14cf906d62a894c612af1b50.

Reason for revert: Breaks AuthFsBenchmarks#randReadRemoteFile

Bug: 266434536
Change-Id: Ifc03e35e818f9bf337d9f1aacbcbab10fc9c2f93
diff --git a/microdroid/init.rc b/microdroid/init.rc
index d2c9c41..bc42791 100644
--- a/microdroid/init.rc
+++ b/microdroid/init.rc
@@ -98,7 +98,7 @@
     mount rootfs rootfs / remount bind ro nodev
 
     # TODO(b/185767624): change the hard-coded size?
-    mount tmpfs tmpfs /data noatime nosuid nodev noexec rw size=128M
+    mount tmpfs tmpfs /data noatime nosuid nodev rw size=128M
 
     # We chown/chmod /data again so because mount is run as root + defaults
     chown system system /data