Update CHANGELOG.md

Author: rajat08

CHANGELOG.md

@@ -2,13 +2,6 @@
 
 ## Unreleased Changes
 
-## [2.0.6](https://github.com/pinecone-io/pinecone-python-client/compare/v2.0.5...v2.0.5) - 2022-02-15
-
-### Changed
-- Changed the spec to add  ```pods``` and ```pod_type``` fields to ```create_index``` and ```describe_index```.
-- ```pod_type``` is used to select between ```'s1'``` and ```'p1'``` pod types during index creation.
-- The field ```pods``` means total number of pods the index will use, ```pods = shards*replicas```.
-
 ## [2.0.5](https://github.com/pinecone-io/pinecone-python-client/compare/v2.0.5...v2.0.4) - 2022-01-17
 
 ### Changed