public static void unsetValue(Project project,VirtualFile root,String key) throws VcsException {
  GitSimpleHandler h=new GitSimpleHandler(project,root,GitCommand.CONFIG);
  h.setSilent(true);
  h.ignoreErrorCode(1);
  h.addParameters("--unset",key);
  h.run();
}

public static void unsetValue ( Project project , VirtualFile root , String key ) throws VcsException { GitSimpleHandler h = new GitSimpleHandler ( project , root , GitCommand . CONFIG ) ; h . setSilent ( true ) ; h . ignoreErrorCode ( 1 ) ; h . addParameters ( "--unset" , key ) ; h . run ( ) ; }
unset the current value
