Remove go.mod to resolve ambiguous import issue

[le-michael]

Fixes #7780

Introducing a go.mod file into the go sub-directory resulted in versioning issues for many clients. We should revert the change and figure out a better/safer way to introduce a go.mod file.

After removing the go.mod file we'll have to wait till the next release before the issue is resolved.

[ceejatec]

Are you now done making go.mod changes? This change broke our builds yet again.

module github.com/google/flatbuffers@latest found (v23.1.4+incompatible), but does not contain package github.com/google/flatbuffers/go

[le-michael]

Yes this will be the last change. Once a new release is cut the issue should be resolved and you can go back to using github.com/google/flatbuffers as the module name. Sorry about the inconvenience.

[le-michael]

@ceejatec this should be fixed now let me know if you have still have any issues.