Problem: processingMCP.xml not removed from DIP when it is created

Expected behaviour

With Archivematica's current functionality, processing MCP.xml should be removed from the DIP it creates.

Current behaviour

Verified in 1.6.1, 1.7.2, and qa/0.x the DIP contains a processingMCP.xml whether or not a custom processing config is passed in the transfer directory or not. See two examples from 1.7.2 (first with default config):

ross-spencer@artefactual:~/Desktop/Artefactual/AIPS/1.7.1/stable-1.7.2$ tree dip-with_dip_2-9ea36165-dd24-4ca8-98c8-ba260119e454
dip-with_dip_2-9ea36165-dd24-4ca8-98c8-ba260119e454
└── with_dip_2-9ea36165-dd24-4ca8-98c8-ba260119e454
    ├── METS.9ea36165-dd24-4ca8-98c8-ba260119e454.xml
    ├── objects
    │   └── 177b3523-48fa-48c8-9412-562660a4924a-one_file.txt
    ├── processingMCP.xml
    └── thumbnails
        └── 177b3523-48fa-48c8-9412-562660a4924a.jpg

3 directories, 4 files

And (custom processing added at Transfer):

ross-spencer@artefactual:~/Desktop/Artefactual/AIPS/1.7.1/stable-1.7.2$ tree dip-with-processing-dip-1f2eb22a-30ad-4bcd-9d51-edc9d26e33bc
dip-with-processing-dip-1f2eb22a-30ad-4bcd-9d51-edc9d26e33bc
└── with-processing-dip-1f2eb22a-30ad-4bcd-9d51-edc9d26e33bc
    ├── METS.1f2eb22a-30ad-4bcd-9d51-edc9d26e33bc.xml
    ├── objects
    │   └── 25aea676-1859-4bf3-accb-1e6c48f7cae2-test-file.txt
    ├── processingMCP.xml
    └── thumbnails
        └── 25aea676-1859-4bf3-accb-1e6c48f7cae2.jpg

3 directories, 4 files

Steps to reproduce

Create a DIP by selecting the appropriate normalization options in your configuration and then download it from the Storage Service afterwards.

Your environment (version of Archivematica, OS version, etc)

Docker-compose, multiple AM versions.

archivematica / Issues

Problem: processingMCP.xml not removed from DIP when it is created #83