Remove old perl scripts

[jgoeders]

Remove old perl scripts that are no longer used by the VTR flow.

Description

Related Issue

Motivation and Context

#1509 #1429 introduced new python scripts to replace the Pythons scripts.

How Has This Been Tested?

Types of changes

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have added tests to cover my changes
• All new and existing tests passed

[vaughnbetz]

A couple of travis ci failures. Looks like a few regtests are still trying to use the perl scripts which are being removed here. E.g. the NO_GRAPHICS tests:

The command "./.github/travis/build.sh" exited with 0.
0.01s$ travis_wait 30 ./run_reg_test.pl vtr_reg_basic -show_failures -j2
Still running (1 of 30): ./run_reg_test.pl vtr_reg_basic -show_failures -j2
The command ./run_reg_test.pl vtr_reg_basic -show_failures -j2 exited with 127.
Log:
/home/travis/.travis/functions: line 619: ./run_reg_test.pl: No such file or directory
/home/travis/.travis/functions: line 607: 6250 Terminated travis_jigger "${!}" "${timeout}" "${cmd[@]}"
The command "travis_wait 30 ./run_reg_test.pl vtr_reg_basic -show_failures -j2" exited with 127.

[jgoeders]

Yes, fixed in #1553.

I'll continue working on making this PR green, then I'll leave it draft for a few weeks as we discussed.

[vaughnbetz]

No issues so far, and CI is green. Leave draft for a while longer or merge now?

[jgoeders]

@vaughnbetz Sorry, didn't see your earlier message. I think it's been a while now. I'll merge it.