Close #17 Remove convenience Methods for getParagraph/Table

Confusing together with the new syntax to access bodyElements directly.
Use `.bodyElement(int).asParagraph()` instead.

src/main/java/com/docutools/poipath/xwpf/XWPFDocumentWrapper.java

@@ -13,12 +13,4 @@ public BodyElementWrapper bodyElement(int index) {
     return new BodyElementWrapper(document.getBodyElements().get(index));
   }
 
-  public ParagraphWrapper paragraph(int index) {
-    return bodyElement(index).asParagraph();
-  }
-
-  public TableWrapper table(int index) {
-    return bodyElement(index).asTable();
-  }
-
 }

src/test/java/com/docutools/poipath/xwpf/XWPFTests.java

@@ -46,7 +46,7 @@ void findTables() throws IOException {
   @Test
   void findPictures() throws IOException {
     try (var document = Documents.resource("/XWPF/pictureTest.docx")) {
-      var picture = new XWPFDocumentWrapper(document).paragraph(0).run(0).pictures();
+      var picture = new XWPFDocumentWrapper(document).bodyElement(0).asParagraph().run(0).pictures();
 
       assertThat(picture.size(), equalTo(1));
     }