Remove _get_pretty_exception_message in PrestoHook

[fusuiyi123]

Issue: #8530

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[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache Airflow community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst)
Here are some useful points:

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[fusuiyi123]

BTW, I got a strange error for pre-commit which complains I don't have gnu installed which I actually did:

echo $PATH
/usr/local/opt/gnu-getopt/bin:/Users/fusuiyi/opt/anaconda3/envs/airflow/bin:/Users/fusuiyi/opt/anaconda3/condabin:/Users/fusuiyi/Downloads/google-cloud-sdk/bin:/Users/fusuiyi/Downloads/apache-maven-3.5.4/bin:/Users/fusuiyi/Downloads/mongodb/bin:/usr/local/mysql/bin:/usr/local/opt/scala@2.11/bin:/usr/local/opt/sbt@0.13/bin:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local/share/dotnet:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Users/fusuiyi/opt/anaconda3/bin:/Users/fusuiyi/opt/anaconda3/condabin:/Users/fusuiyi/Downloads/google-cloud-sdk/bin:/Users/fusuiyi/Downloads/apache-maven-3.5.4/bin:/Users/fusuiyi/Downloads/mongodb/bin:/usr/local/mysql/bin:/usr/local/opt/scala@2.11/bin:/usr/local/opt/sbt@0.13/bin:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/Users/fusuiyi/.fzf/bin

git commit

You are running pre_commit_ci_build.sh in OSX environment
And you need to install gnu commands

Run 'brew install gnu-getopt coreutils'

Then link the gnu-getopt to become default as suggested by brew.

If you use bash, you should run this command:

echo 'export PATH="/usr/local/opt/gnu-getopt/bin:$PATH"' >> ~/.bash_profile
. ~/.bash_profile

If you use zsh, you should run this command:

echo 'export PATH="/usr/local/opt/gnu-getopt/bin:$PATH"' >> ~/.zprofile
. ~/.zprofile

Login and logout afterwards !!

After re-login, your PATH variable should start with "/usr/local/opt/gnu-getopt/bin"
Your current path is /usr/local/git/libexec/git-core:/usr/local/opt/gnu-getopt/bin:/Users/fusuiyi/opt/anaconda3/envs/airflow/bin:/Users/fusuiyi/opt/anaconda3/condabin:/Users/fusuiyi/Downloads/google-cloud-sdk/bin:/Users/fusuiyi/Downloads/apache-maven-3.5.4/bin:/Users/fusuiyi/Downloads/mongodb/bin:/usr/local/mysql/bin:/usr/local/opt/scala@2.11/bin:/usr/local/opt/sbt@0.13/bin:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Library/TeX/texbin:/usr/local/share/dotnet:/opt/X11/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Users/fusuiyi/opt/anaconda3/bin:/Users/fusuiyi/opt/anaconda3/condabin:/Users/fusuiyi/Downloads/google-cloud-sdk/bin:/Users/fusuiyi/Downloads/apache-maven-3.5.4/bin:/Users/fusuiyi/Downloads/mongodb/bin:/usr/local/mysql/bin:/usr/local/opt/scala@2.11/bin:/usr/local/opt/sbt@0.13/bin:/opt/local/bin:/opt/local/sbin:/usr/local/sbin:/Users/fusuiyi/.fzf/bin

[boring-cyborg]

Awesome work, congrats on your first merged pull request!