Fix all the things that removing refinement from the search box signal broke

src/calibre/gui2/lrf_renderer/main.py

@@ -152,7 +152,7 @@ class Main(MainWindow, Ui_MainWindow):
             self.stack.setCurrentIndex(1)
             self.renderer.start()
 
-    def find(self, search, refinement):
+    def find(self, search):
         self.last_search = search
         try:
             self.document.search(search)

src/calibre/gui2/viewer/main.py

@@ -424,7 +424,7 @@ class EbookViewer(MainWindow, Ui_EbookViewer):
             self.set_bookmarks(self.iterator.bookmarks)
 
 
-    def find(self, text, refinement, repeat=False, backwards=False):
+    def find(self, text, repeat=False, backwards=False):
         if not text:
             self.view.search('')
             return self.search.search_done(False)

src/calibre/web/feeds/recipes/model.py

@@ -241,7 +241,7 @@ class RecipeModel(QAbstractItemModel, SearchQueryParser):
                 results.add(urn)
         return results
 
-    def search(self, query, refinement):
+    def search(self, query):
         try:
             results = self.parse(unicode(query))
             if not results: