Merge branch 'fix_cfp_cospeaker' of https://github.com/pycontw/pycon.tw into fix_cfp_cospeaker

Author: SivanYeh

src/proposals/views/speakers.py

@@ -72,7 +72,7 @@ class TutorialProposalManageSpeakersView(ProposalManageSpeakersView):
 
 class AdditionalSpeakerRemoveView(
         LoginRequiredMixin, UserProfileRequiredMixin,
-        ProposalEditMixin, FormValidMessageMixin, UpdateView):
+        FormValidMessageMixin, UpdateView):
 
     http_method_names = ['post', 'options']
     model = AdditionalSpeaker
@@ -90,7 +90,7 @@ def get_success_url(self):
 
 class AdditionalSpeakerSetStatusView(
         LoginRequiredMixin, UserProfileRequiredMixin,
-        ProposalEditMixin, FormValidMessageMixin, UpdateView):
+        FormValidMessageMixin, UpdateView):
 
     http_method_names = ['post', 'options']
     model = AdditionalSpeaker