removed six (Azure#30890)

Author: xiangyan99

sdk/metricsadvisor/azure-ai-metricsadvisor/CHANGELOG.md

@@ -10,6 +10,7 @@
 
 ### Other Changes
 - This version and all future versions will require Python 3.7+. Python 2.7 and 3.6 are no longer supported.
+- Removed dependency on `six`.
 
 ## 1.0.0 (2021-07-06)
 

sdk/metricsadvisor/azure-ai-metricsadvisor/setup.py

@@ -66,6 +66,5 @@
     install_requires=[
         "azure-core<2.0.0,>=1.23.0",
         "msrest>=0.6.21",
-        'six>=1.11.0',
     ],
 )