remove no longer supported parameter --comment

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

cdist/conf/type/__ssh_authorized_keys/man.text

@@ -40,9 +40,6 @@ state::
 file::
    an alternative destination file, defaults to ~$owner/.ssh/authorized_keys
 
-comment::
-   an optional comment
-
 
 BOOLEAN PARAMETERS
 ------------------
@@ -67,12 +64,11 @@ __ssh_authorized_keys root \
 __ssh_authorized_keys user-name \
    --key "ssh-rsa AXYZAAB3NzaC1yc2..."
 
-# same as above, but with explicit owner, two keys and a comment
+# same as above, but with explicit owner and two keys
 __ssh_authorized_keys some-fancy-id \
    --owner user-name \
    --key "ssh-rsa AXYZAAB3NzaC1yc2..." \
-   --key "ssh-rsa AZXYAAB3NzaC1yc2..." \
-   --comment "allow the members of project foo to login"
+   --key "ssh-rsa AZXYAAB3NzaC1yc2..."
 
 # same as above, but authorized_keys file in non standard location
 __ssh_authorized_keys some-fancy-id \

cdist/conf/type/__ssh_authorized_keys/parameter/optional

@@ -1,4 +1,3 @@
 owner
 state
 file
-comment