[route][config] fix set_routes

pyheatpump/config.py

@@ -85,9 +85,7 @@ async def get_config(request):
 
 
 async def set_config(request):
-    body = await request.json()
-    d_body = json.loads(body)
-    #return PlainTextResponse(body)
+    d_body = await request.json()
 
     for sect in d_body.keys():
         if type(d_body[sect]) is not dict: