Remove obsolete comment from cmds/installd/otapreopt_chroot.cpp.

APEX packages are deactivated at the end of `otapreopt_chroot`, so
loop devices used to mount them are returned to the system.

Test: m otapreopt_chroot
Bug: 113373927
Change-Id: I8b55787ffa7abdfe63f9778623f5e2317b8a4525
diff --git a/cmds/installd/otapreopt_chroot.cpp b/cmds/installd/otapreopt_chroot.cpp
index 609ddaf..670abea 100644
--- a/cmds/installd/otapreopt_chroot.cpp
+++ b/cmds/installd/otapreopt_chroot.cpp
@@ -80,8 +80,6 @@
     // system/apex/apexd/apexd_main.cpp.
     //
     // Only scan the APEX directory under /system (within the chroot dir).
-    // Note that this leaves around the loop devices created and used by
-    // libapexd's code, but this is fine, as we expect to reboot soon after.
     apex::scanPackagesDirAndActivate(apex::kApexPackageSystemDir);
     return apex::getActivePackages();
 }