chore: replace QueryResult test 3 with 7

Remove `QueryResult` test 3 (it is a duplicate of `query_result_with_error`),
and move test 7 into its place.

src/model.rs

@@ -68,11 +68,10 @@ mod tests {
     fn test_query_result_deserializer() {
         from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_1.xml")).unwrap();
         from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_2.xml")).unwrap();
-        //from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_3.xml")).unwrap();
+        from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_3.xml")).unwrap();
         from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_4.xml")).unwrap();
         from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_5.xml")).unwrap();
         from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_6.xml")).unwrap();
-        from_str::<QueryResult>(&read_sample_data_from_path("tests/sample-data/query_result_7.xml")).unwrap();
     }
 
     #[test]

tests/sample-data/query_result_3.xml

@@ -1,8 +1,17 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<queryresult success='false' error='true' numpods='0'
-     datatypes='' timedout='' timing='0.066' parsetiming='0'>
-  <error>
-    <code>2</code>
-    <msg>Appid missing</msg>
-  </error>
+<queryresult success='false'
+    error='false'
+    numpods='0'
+    datatypes=''
+    timedout=''
+    timedoutpods=''
+    timing='4.739'
+    parsetiming='0.14400000000000002'
+    parsetimedout='false'
+    recalculate=''
+    id=''
+    host='http://www5b.wolframalpha.com'
+    server='35'
+    related=''
+    version='2.6'>
+ <languagemsg english='Wolfram|Alpha does not yet support Slovak.' />
 </queryresult>