dm thin: remove stale 'trim' message documentation
The 'trim' message wasn't ever implemented.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
diff --git a/Documentation/device-mapper/thin-provisioning.txt b/Documentation/device-mapper/thin-provisioning.txt
index 2f51735..4f67578 100644
--- a/Documentation/device-mapper/thin-provisioning.txt
+++ b/Documentation/device-mapper/thin-provisioning.txt
@@ -380,9 +380,6 @@
load a target that is bigger than before, then extra blocks will be
provisioned as and when needed.
-If you wish to reduce the size of your thin device and potentially
-regain some space then send the 'trim' message to the pool.
-
ii) Status
<nr mapped sectors> <highest mapped sector>