Remove opencensus dependency (Azure#27851)

Author: diondrapeck

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

@@ -84,7 +84,7 @@
         "isodate",
         "azure-common<2.0.0,>=1.1",
         "typing-extensions<5.0.0",
-        "opencensus-ext-azure<2.0.0",
+        # "opencensus-ext-azure<2.0.0", disabled until SDK logging re-activated
         # Used in pipeline_component_builder
         'bytecode<0.15.0,>=0.13.0',
     ],