remove two examples

Author: kunli2

src/test/java/org/openrewrite/java/migrate/lang/UseTextBlocksTest.java

@@ -651,7 +651,6 @@ class Test {
      * <p>
      * On converting this to a text block, only one of the quotes needs to be escaped: \"\"\" -> ""\"
      */
-    @DocumentExample
     @Test
     void tripleQuotes() {
         rewriteRun(
@@ -691,7 +690,6 @@ class Test {
         );
     }
 
-    @DocumentExample
     @Test
     void eightQuotes() {
         rewriteRun(