consider alternative strategy for removing the tokenfile in maven plugin

[jorgheymans]

Sort of reported here .

In this fix the flow-build-info.json token file was scheduled to be deleted on jvm exit. However, there are things like mvnd, which keeps maven instances around for faster build times. In such case, the jvm does not exit, and the tokenfile remains present.

Maybe there are other scenario's. The intellij plugin could be more defensive about that file, or the tokenFile deletion gets handled differently.