CppunitTest_sw_rtfimport: convert one testcase to use CPPUNIT_TEST_FIXTURE()

Let's see if this causes any problems before doing a mass-conversion.

Benefits are:

- ctags can jump to the testcase if Writer-specific macros are not used
- the Writer-specific macros just overcomplicate things for people not
  familiar with Writer

Change-Id: Icc057a789acc220f5625461944dc6b8f35aad334
Reviewed-on: https://gerrit.libreoffice.org/82109
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

sw/qa/extras/rtfimport/rtfimport.cxx

@@ -60,8 +60,9 @@ protected:
     AllSettings m_aSavedSettings;
 };
 
-DECLARE_RTFIMPORT_TEST(testN695479, "n695479.rtf")
+CPPUNIT_TEST_FIXTURE(Test, testN695479)
 {
+    load(mpTestDocumentPath, "n695479.rtf");
     uno::Reference<text::XTextFramesSupplier> xTextFramesSupplier(mxComponent, uno::UNO_QUERY);
     uno::Reference<container::XIndexAccess> xIndexAccess(xTextFramesSupplier->getTextFrames(),
                                                          uno::UNO_QUERY);