Back out "Modify private apis to set, store, and get intrinsic sizing keywords" (#1750)

Summary:
X-link: https://github.com/facebook/react-native/pull/47895

Pull Request resolved: https://github.com/facebook/yoga/pull/1750

These APIs were only added so that we could do TDD as we work on intrinsic sizing functionality. As of right now they do nothing. We are aiming on publishing a new version of Yoga soon so for the time being we are going to back these out so as not to confuse anyone with this new functionality. Ideally we get to a point where we have some temporary experimental header to stage these in but this is a bit time sensitive so just backing out for now

Changelog: [Internal]

Reviewed By: NickGerleman

Differential Revision: D66332307

fbshipit-source-id: 1d596964e0c893091c541988506e8b80fa6d1957

enums.py

@@ -8,15 +8,7 @@ import os
 
 ENUMS = {
     "Direction": ["Inherit", "LTR", "RTL"],
-    "Unit": [
-        "Undefined",
-        "Point",
-        "Percent",
-        "Auto",
-        "MaxContent",
-        "FitContent",
-        "Stretch",
-    ],
+    "Unit": ["Undefined", "Point", "Percent", "Auto"],
     "FlexDirection": ["Column", "ColumnReverse", "Row", "RowReverse"],
     "Justify": [
         "FlexStart",