get rid of trailing ,, update test failures

Author: JLDLaughlin

src/ast/mod.rs

@@ -897,7 +897,7 @@ impl fmt::Display for Statement {
                     }
                 )?;
                 if let Some(like) = like {
-                    write!(f, " LIKE '{}'", value::escape_single_quote_string(like),)?;
+                    write!(f, " LIKE '{}'", value::escape_single_quote_string(like))?;
                 }
                 Ok(())
             }

tests/sqlparser_common.rs

@@ -2752,13 +2752,10 @@ fn parse_show_objects_with_like_regex() {
     let sql = "SHOW TABLES LIKE '%foo%'";
     match verified_stmt(sql) {
         Statement::ShowObjects { object_type, like } => {
-            match like {
-                Some(value) => assert_eq!("%foo%", value),
-                None => unimplemented!(),
-            }
+            assert_eq!(like.unwrap(), "%foo%");
             assert_eq!(ObjectType::Table, object_type);
         }
-        _ => assert!(false),
+        _ => panic!("invalid SHOW OBJECTS statement"),
     }
 }