removes contributing file changes

Signed-off-by: Madhav Sainanee <[email protected]>

Author: madhav-db

CONTRIBUTING.md

@@ -165,6 +165,3 @@ Modify the dependency specification (syntax can be found [here](https://python-p
 - `rm poetry.lock && poetry install`
 
 Sometimes `poetry update` can freeze or run forever. Deleting the `poetry.lock` file and calling `poetry install` is guaranteed to update everything but is usually _slower_ than `poetry update` **if `poetry update` works at all**.
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-Sample change: Add commit signoffs. Then the check will pass