Temporarily remove netd_stable_secret_prop from compat infra.

This will allow removing the netd_stable_secret_prop from common
policy in master. It will be re-added after the wahoo-specific
sepolicy for netd_stable_secret_prop lands in oc-dr1-dev, is
automerged to master, and then is reverted in master.

This reverts commit ebea2b45.

Bug: 17613910
Bug: 62573845
Test: None, prebuilt change only.
Change-Id: I1234326d2fe6446e7e09ba9e97187518fa9bce33

prebuilts/api/26.0/26.0.ignore.cil

@@ -10,7 +10,6 @@
     hal_tetheroffload_hwservice
     kmsg_debug_device
     memcg_device
-    netd_stable_secret_prop
     sysfs_fs_ext4_features
     timezone_service
     tombstoned_java_trace_socket))