Remove check for compatible scale and scale-info versions

[cmichi]

Follow-up issue for use-ink/ink#1890.

In the past we had introduced a check into cargo-contract. For every cargo contract build/check it asserts that the ink! contract contains a scale dependency version that is compatible with the scale-info dependency version.

The check can be found here.

With the changes in use-ink/ink#1890 this check is now obsolete and it can be removed.

As use-ink/ink#1890 will only be available in ink! 5.0 we have to ensure that once you removed the check only ink! contracts >= 5.0 can be compiled with cargo-contract.

ToDo

• Remove the check.
• Make sure that cargo-contract is only compatible with ink! >= 5.0.