spec: content_migration content_export 193 spec fixes

Change-Id: Ibee2cc8cb2568dcba8d4be16aa34c88b116478d5
Reviewed-on: https://gerrit.instructure.com/20328
Reviewed-by: Bryan Madsen <bryan@instructure.com>
Product-Review: Bryan Madsen <bryan@instructure.com>
QA-Review: Bryan Madsen <bryan@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>

spec/selenium/content_exports_spec.rb

@@ -6,7 +6,6 @@ describe "content exports" do
   context "as a teacher" do
 
     before (:each) do
-      pending('193')
       course_with_teacher_logged_in
     end
 

spec/selenium/content_migrations_spec.rb

@@ -4,7 +4,6 @@ describe "external migrations" do
   it_should_behave_like "in-process server selenium tests"
 
   before(:each) do
-    pending('193')
     @password = "asdfasdf"
     @teacher = user_with_pseudonym :active_user => true,
                                    :username => "teacher@example.com",