CB-7091: Remove check_requirements() funcs from platform parsers

No longer used, removing. They were either:
1) Empty
2) Duplicating the chqck_reqs call that is also done by platform create scripts
3) In Ubuntu duplicated the code from check_reqs
CB-7091: Remove check_requirements() funcs from platform parsers

No longer used, removing. They were either:
1) Empty
2) Duplicating the chqck_reqs call that is also done by platform create scripts
3) In Ubuntu duplicated the code from check_reqs
CB-7100: Use npm based lazy-load by default

fixing test to use imaginary version to avoid colliding with actual local content