refactoring unused imports

Author: fvarrui

src/main/java/io/github/fvarrui/javapackager/maven/CreateWindowsExeLaunch4j.java

@@ -23,7 +23,6 @@
 import io.github.fvarrui.javapackager.packagers.Context;
 import io.github.fvarrui.javapackager.packagers.WindowsPackager;
 import io.github.fvarrui.javapackager.utils.FileUtils;
-import io.github.fvarrui.javapackager.utils.RcEdit;
 
 /**
  * Creates Windows executable with Maven