Removed system line separator change from eclipse-base config

[fvgh]

• changeSystemLineSeparator no longer part of default configuration
• Added annotations due to spotbugs version bump

As agreed for #1049, the line separator config will no longer be part of the default configuration. First tests shows that the System line separator is currently only used by WTP. Tests for the different formatters will be provided in dedicated PR.

[fvgh]

@nedtwigg As clarified in #1054, the tests are not executed for eclipse-base by CI. I made some changes to the tests due to the spotbugs version upgrade. What is the best way to enable the tests in CI, and to executed them on a bug/feature branch?

[nedtwigg]

I think this will be solved by

• #1524