remove second newline at end of printed ecore files

src/test/java/de/tudresden/inf/st/e2j/parser/ParserTest.java

@@ -39,7 +39,7 @@ class ParserTest {
     p.writeXMI(b);
 
     try (PrintWriter out = new PrintWriter("bigraph_out.ecore")) {
-      out.println(b.toString());
+      out.print(b.toString());
     } catch (FileNotFoundException e) {
       Assertions.fail("unable to write output file", e);
     }
@@ -74,7 +74,7 @@ class ParserTest {
     p.writeXMI(b);
 
     try (PrintWriter out = new PrintWriter("ecore_out.ecore")) {
-      out.println(b.toString());
+      out.print(b.toString());
     } catch (FileNotFoundException e) {
       Assertions.fail("unable to write output file", e);
     }