[MINOR] Delete useless comments
diff --git a/testkit/src/main/java/org/apache/calcite/sql/parser/SqlParserTest.java b/testkit/src/main/java/org/apache/calcite/sql/parser/SqlParserTest.java
index 1b6612a..00426dd 100644
--- a/testkit/src/main/java/org/apache/calcite/sql/parser/SqlParserTest.java
+++ b/testkit/src/main/java/org/apache/calcite/sql/parser/SqlParserTest.java
@@ -7140,7 +7140,6 @@
 
   @Test void testParensInFrom() {
     // UNNEST may not occur within parentheses.
-    // FIXME should fail at "unnest"
     sql("select *from (^unnest(x)^)")
         .fails("Expected query or join");