Update docs and remove unused code

Signed-off-by: Wei-Chun, Chang <[email protected]>

Author: wcchang1115

docs/project.md

@@ -7,9 +7,7 @@ The `.piperider/` folder may contains these files
 Name        | Description
 ------------|---------------
 config.yml | The project config file. Generated by `piperider init`. Contains the data source and dbt integration settings.
-credentials.yml | The data source connection parameters and credentials to connect to data sources. This is supposed to not be source controlled.  
-assertions/ | The folder to define assertions. Please see [assertions](./assertions.md)
-plugins/ | The folder to define custom defined test function. Please see [user defined test function](./user-defined-test-function.md)
+credentials.yml | The data source connection parameters and credentials to connect to data sources. This is supposed to not be source controlled.
 outputs/ | The piperider run raw result generated by `piperider run`
 reports/ | The piperider report generated by `piperider generate-report`
 comparisons/ | The piperider report generated by `piperider compare-report`

piperider_cli/runner.py

@@ -241,7 +241,6 @@ class PreRunValidatingResult(Enum):
 
 
 def _pre_run_validating(ds: DataSource) -> (PreRunValidatingResult, Exception):
-    console = Console()
     err = ds.verify_connector()
     if err:
         return PreRunValidatingResult.FAILED_TO_LOAD_CONNECTOR, err