Remove sourcefilter tests

Author: jordan-powers

server/src/test/java/org/elasticsearch/index/mapper/IgnoredSourceFieldMapperTests.java

@@ -132,15 +132,6 @@ public void testIgnoredStringFullUnicode() throws IOException {
         String expected = Strings.toString(JsonXContent.contentBuilder().startObject().field(fieldName, value).endObject());
 
         assertEquals(expected, getSyntheticSourceWithFieldLimit(b -> b.field(fieldName, value)));
-        assertEquals(
-            expected,
-            getSyntheticSourceWithFieldLimit(new SourceFilter(new String[] { fieldName }, null), b -> b.field(fieldName, value))
-        );
-        assertEquals(
-            "{}",
-            getSyntheticSourceWithFieldLimit(new SourceFilter(null, new String[] { fieldName }), b -> b.field(fieldName, value))
-        );
-
     }
 
     public void testIgnoredInt() throws IOException {