Add ssh-keys core plugin

plugins/ssh-keys/subcommands/remove

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+source "$PLUGIN_CORE_AVAILABLE_PATH/ssh-keys/functions"
+
+remove_key() {
+  declare desc="Removes key from authorized_keys"
+  shift
+  local name="$1"
+  verify_ssh_key_file
+  [[ -z $1 ]] && dokku_log_fail "A name is required to remove a key, ie: dokku ssh-keys:remove <name>"
+  sshcommand acl-remove dokku "$name" || dokku_log_fail "sshcommand returned an error $?"
+}
+
+remove_key "$@"