remove extraneous 'id' fields

[mr-c]

Some CWL generators, like cwlgen, output map<> format but still retain the id in the map entry's values, even though the 'id' value is also the map key.

This should be stripped out.

Example: https://github.com/PMCC-BioinformaticsCore/janis-pipelines/blob/536f8181dd3edaa7339483cc28610e3acde5d105/janis_pipelines/wgs_germline/cwl/WGSGermlineMultiCallers.cwl#L22

inputs:
  align_and_sort_sortsam_tmpDir:
    id: align_and_sort_sortsam_tmpDir
    doc: Undocumented option
    type: string
    default: ./tmp

[ghost]

@mr-c common-workflow-language/common-workflow-language#518

[ghost]

But when that question is resolved, this will probably be merged into #1 ?

[mr-c]

@mr-c common-workflow-language/common-workflow-language#518

We fixed the formatting of the HTML output and added https://www.commonwl.org/v1.1/CommandLineTool.html#map to address that

[mr-c]

But when that question is resolved, this will probably be merged into #1 ?

Probably!