Chore: Remove legacy AC checks from team (#68715)

* removing legacy AC checks from team API handlers

* Chore: remove `UserIDFilter` from team queries (#68820)

* remove userIDfilter from team queries in favour of RBAC SQL filtering

* fix typo

* remove redundant tests

* remove another unused function

* fix failing test

pkg/services/team/teamtest/team.go

@@ -61,6 +61,10 @@ func (s *FakeService) RemoveTeamMember(ctx context.Context, cmd *team.RemoveTeam
 	return s.ExpectedError
 }
 
+func (s *FakeService) RemoveUsersMemberships(ctx context.Context, userID int64) error {
+	return s.ExpectedError
+}
+
 func (s *FakeService) GetUserTeamMemberships(ctx context.Context, orgID, userID int64, external bool) ([]*team.TeamMemberDTO, error) {
 	return s.ExpectedMembers, s.ExpectedError
 }