Remove URL parsing

The fields `courseNr` and `semesterCode` are already parsed by the
controller and do not have to be parsed again when calling the
add_to_fav function.

app/controllers/crawlers/courses_crawler_controller.rb

@@ -41,10 +41,6 @@ class Crawlers::CoursesCrawlerController < Crawlers::TissCrawlerController
 
   def add_to_fav
     params[:api] = '/api/course/'
-    regex = params[:detail_url].match(/courseNr=(?<number>\S{6})/)
-    params[:number] = regex[:number]
-    regex = params[:detail_url].match(/semester=(?<semester>\d{4}[SW])/)
-    params[:semester] = regex[:semester]
 
     @course = TissCrawler.get_course_details(params)