move WolframAlpha away from Science category

searx/settings.yml

@@ -1455,7 +1455,7 @@ engines:
     # Or you can use the html non-stable engine, activated by default
     engine: wolframalpha_noapi
     timeout: 6.0
-    categories: science
+    categories: []
 
   - name: dictzone
     engine: dictzone