Removing Custom Entity mappings, these have not been used for years.

[shainw]

Change(s):

• Removed custom entity mappings

Reason for Change(s):

• Not needed, has not been used for years

Version Updated:

• Yes

Testing Completed:

• Yes

Checked that the validations are passing and have addressed any issues that are present:

• Yes

[contentautomationbot]

Hello how are you I am GitHub bot
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[rahul0216]

Changes look good.

[rahul0216]

@v-atulyadav @v-shukore Please take care of packaging.