qsignature cleanup

[holmeso]

Description

Removed some deprecated classes Renamed SignatureGeneratorBespoke to Generate Removed unused methods and tests Deprecated some unused classes

Fixes #233

Type of change

Please delete options that are not relevant.

• [X] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [X] This change requires a documentation update

How Has This Been Tested?

Existing unit tests pass. No new functionality has been introduced.

Are WDL Updates Required?

WDL updates will be required. qsignatureGeneratorBespoke.wdl and qsignatureGenerator.wdl will both need to be updated to point to the Generate class.

Checklist:

• [X] My code follows the style guidelines of this project
• [X] I have performed a self-review of my own code
• [X] I have commented my code, particularly in hard-to-understand areas
• [X] I have made corresponding changes to the documentation
• [X] My changes generate no new warnings
• [X] New and existing unit tests pass locally with my changes