msrestazure is a holdover from track1; can be deprecated (in light of control client removal.) (#13074)

Author: KieranBrantnerMagee

sdk/servicebus/azure-servicebus/setup.py

@@ -79,7 +79,6 @@
     ]),
     install_requires=[
         'uamqp>=1.2.10,<2.0.0',
-        'msrestazure>=0.4.32,<2.0.0',
         'azure-common~=1.1',
         'msrest>=0.6.17,<2.0.0',
         'azure-core<2.0.0,>=1.6.0',