[chore] settings.yml: set broken engines yahoo and karmasearch to inactive

searx/settings.yml

@@ -1198,6 +1198,7 @@ engines:
     categories: [general, web]
     search_type: web
     shortcut: ka
+    inactive: true
 
   - name: karmasearch images
     engine: karmasearch
@@ -1205,18 +1206,21 @@ engines:
     search_type: images
     shortcut: kai
     paging: false
+    inactive: true
 
   - name: karmasearch videos
     engine: karmasearch
     categories: [videos, web]
     search_type: videos
     shortcut: kav
+    inactive: true
 
   - name: karmasearch news
     engine: karmasearch
     categories: [news, web]
     search_type: news
     shortcut: kan
+    inactive: true
 
   - name: kickass
     engine: kickass
@@ -2144,6 +2148,7 @@ engines:
   - name: yahoo news
     engine: yahoo_news
     shortcut: yhn
+    inactive: true
 
   - name: youtube
     shortcut: yt