Revert "Improve example docs around SQLExecuteQueryOperator in Postgres/Oracle/Presto/Vertica/ODBC (#46352)"

[amoghrajesh]

…es/Oracle/Presto/Vertica/ODBC (#46352)"

This reverts commit 454afb5.

Reverts #46352 to fix the CI. After reverting, spellcheck goes through:

Current package filters: 
['apache-airflow-providers-odbc']
#################### Fetching inventories ####################
Nothing to do
#################### Documentation will be built for 1 package(s) with 12 parallel jobs ####################
1. apache-airflow-providers-odbc
#################### Cleaning documentation files ####################
apache-airflow-providers-odbc                               : Cleaning files
#################### Scheduling spell checking of documentation ####################
apache-airflow-providers-odbc                               : Scheduling spellchecking
#################### Running spell checking of documentation ####################

apache-airflow-providers-odbc                               : Checking spelling started
apache-airflow-providers-odbc                               : (NEW) Cleaning up old files in /opt/airflow/docs/apache-airflow-providers-odbc.
apache-airflow-providers-odbc                               : (NEW) Coping docs from /opt/airflow/providers/odbc/docs to /opt/airflow/docs/apache-airflow-providers-odbc.
apache-airflow-providers-odbc                               : Finished spell-checking successfully
apache-airflow-providers-odbc                               : (NEW) Cleaning up generated files in /opt/airflow/docs/apache-airflow-providers-odbc.
apache-airflow-providers-odbc                               : Checking spelling completed

cc @nailo2c you will have to probably create it again, sorry about that.

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[potiuk]

Hmm. I was fixing it - without revertion in #46372 -> I will reapply this one as I think it's been properly building docs after my changes.

[amoghrajesh]

Sorry about that, was unblocking some builds

[nailo2c]

No worries, I'll check my PR again and reapply it.