stupid dependency removed

de.prob.core/META-INF/MANIFEST.MF

@@ -5,9 +5,7 @@ Bundle-SymbolicName: de.prob.core;singleton:=true
 Bundle-Version: 9.1.2
 Require-Bundle: org.eclipse.core.runtime;bundle-version="[3.5.0,4.0.0)",
  org.rodinp.core;bundle-version="[1.3.1,1.6.0)",
- org.eventb.core;bundle-version="[2.1.0,2.4.0)",
- org.eclipse.jface;bundle-version="[3.6.0,4.0.0)",
- org.eclipse.ui;bundle-version="[3.6.0,4.0.0)"
+ org.eventb.core;bundle-version="[2.1.0,2.4.0)"
 Bundle-ActivationPolicy: lazy
 Bundle-Vendor: HHU Düsseldorf STUPS Group
 Export-Package: de.be4.classicalb.core.parser,

de.prob.core/src/de/prob/core/Animator.java

@@ -10,7 +10,6 @@ import java.io.File;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.eclipse.core.commands.Command;
 import org.osgi.service.prefs.Preferences;
 
 import de.prob.core.command.IComposableCommand;

de.prob.core/src/de/prob/core/command/IComposableCommand.java

@@ -3,7 +3,6 @@
  */
 package de.prob.core.command;
 
-import org.eclipse.core.commands.Command;
 
 import de.prob.parser.ISimplifiedROMap;
 import de.prob.prolog.output.IPrologTermOutput;