Remove unmaintained one-off scripts

[lgtm-com[bot]]

This pull request fixes 52 alerts when merging cf835ab2ebea3edd74eddb5c263b98ec2956c57f into 209fbfc8bf26aecbd3ea48a1a741160d0143a1b2 - view on LGTM.com

fixed alerts:

• 31 for Unused import
• 8 for Unused local variable
• 7 for Variable defined multiple times
• 2 for Incomplete regular expression for hostnames
• 2 for Wrong name for an argument in a class instantiation
• 1 for Except block handles 'BaseException'
• 1 for Wrong number of arguments in a call