[mod] remove cloudflare protected digbt from engines list

searx/settings.yml

@@ -161,11 +161,12 @@ engines:
     weight : 2
     disabled : True
 
-  - name : digbt
-    engine : digbt
-    shortcut : dbt
-    timeout : 6.0
-    disabled : True
+# cloudflare protected
+#  - name : digbt
+#    engine : digbt
+#    shortcut : dbt
+#    timeout : 6.0
+#    disabled : True
 
   - name : digg
     engine : digg