Git repo should not be required to do a basic portal compile from source

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: Master
• Fix Version/s: 7.0.X, 7.1.X, 7.2.X, 7.3.3 CE GA4, 7.3.10 DXP GA1, Master
• Component/s: Dev Tools > Portal Build Env
• Labels: None
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/86485

Steps to Reproduce:

1. Download latest portal source code zip from github (https://github.com/liferay/liferay-portal/archive/master.zip)
2. Unzip source code
3. Execute "ant all"

Expected Result:
Portal source compiles without setting up git repo (ant and jdk still required)

Actual Result:
Ant "clean" task fails due to missing .git folder

Workaround: run "ant compile deploy" and skip "clean" step.