Fix tests using invalid syntax

Author: msimacek

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/parser/BasicTests.java

@@ -554,7 +554,7 @@ public void not01() throws Exception {
 
     @Test
     public void nonlocal02() throws Exception {
-        checkTreeResult("nonlocal x");
+        checkSyntaxError("nonlocal x");
     }
 
     @Test

graalpython/com.oracle.graal.python.test/src/com/oracle/graal/python/test/parser/SSTSerializationTests.java

@@ -768,11 +768,6 @@ public void moduleDocTest() throws Exception {
                                         "\"\"\"MODULE A DOC\"\"\"\n" + "print(\"module A\")");
     }
 
-    @Test
-    public void nonlocalTest() throws Exception {
-        checkSerialization("nonlocal x");
-    }
-
     @Test
     public void numberBinTest() throws Exception {
         checkSerialization("0b101");
@@ -1084,7 +1079,7 @@ public void withTest() throws Exception {
     }
 
     @Test
-    public void yeildTest() throws Exception {
+    public void yieldTest() throws Exception {
         checkSerialization("def f(): yield 1");
         checkSerialization("def f(): yield");
         checkSerialization("def f(): x += yield");