removing scored/has_score from randomized content block

for TNL-4171

common/lib/xmodule/xmodule/library_content_module.py

@@ -99,12 +99,6 @@ class LibraryContentFields(object):
         values=_get_capa_types(),
         scope=Scope.settings,
     )
-    has_score = Boolean(
-        display_name=_("Scored"),
-        help=_("Set this value to True if this module is either a graded assignment or a practice problem."),
-        default=False,
-        scope=Scope.settings,
-    )
     selected = List(
         # This is a list of (block_type, block_id) tuples used to record
         # which random/first set of matching blocks was selected per user