Remove obsolete RedirectErrAndOut plugin

ImageJ 1.x now provides its own mechanism for redirection. The
imagej-legacy component of ImageJ2 enables redirection all the time, to
ensure that critical information (such as exception stack traces) are
not lost. However, the RedirectErrAndOut plugin complains that
"System.out/err is already redirected". To avoid a clash, let's just
remove this functionality which fits better into ImageJ2 core anyway.
Bump to pom-fiji 6.1.4

This is in preparation for releasing Fiji_Plugins 2.0.2.