Revert "IJ1Helper: always redirect stdout and stderr"

This reverts commit 2447ea0.

This address Fiji bug 984:
http://fiji.sc/bugzilla/show_bug.cgi?id=984

As well as several complaints on the mailing lists.

It seems that many people use the ImageJ1 Log window for macro output,
and conflating anything else into that window disrupts workflows.

So, we will need to find another way to preserve vital information
dumped to stdout and stderr. Perhaps a dedicated Console window? It
should probably not appear automatically though unless an exception
is detected. See issue #97 for details.

src/main/java/net/imagej/legacy/IJ1Helper.java

@@ -40,7 +40,6 @@
 import ij.WindowManager;
 import ij.gui.ImageWindow;
 import ij.gui.Toolbar;
-import ij.io.LogStream;
 import ij.io.Opener;
 import ij.macro.Interpreter;
 import ij.plugin.Commands;
@@ -130,10 +129,6 @@ public void initialize() {
 			IJ.runPlugIn("ij.IJ.init", "");
 		}
 		if (ij1 != null) {
-			// always redirect stdout and stderr to the ImageJ 1.x Log window
-			System.setOut(new LogStream());
-			System.setErr(new LogStream());
-
 			// NB: *Always* call System.exit(0) when quitting:
 			// - In the case of batch mode, the JVM needs to terminate at the
 			//   conclusion of the macro/script, regardless of the actions performed