C#: Update FlowSummaries test as the bogus flow summaries for the KeyValuePair default constructor has been removed.

Author: michaelnebel

csharp/ql/test/library-tests/dataflow/library/FlowSummaries.expected

@@ -225,8 +225,6 @@
 | System.Collections.Generic;IList<>;true;get_Item;(System.Int32);;Element of Argument[-1];ReturnValue;value |
 | System.Collections.Generic;IList<>;true;set_Item;(System.Int32,T);;Argument[1];Element of Argument[-1];value |
 | System.Collections.Generic;ISet<>;true;Add;(T);;Argument[0];Element of Argument[-1];value |
-| System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;();;Argument[0];Property[System.Collections.Generic.KeyValuePair<,>.Key] of ReturnValue;value |
-| System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;();;Argument[1];Property[System.Collections.Generic.KeyValuePair<,>.Value] of ReturnValue;value |
 | System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;(TKey,TValue);;Argument[0];Property[System.Collections.Generic.KeyValuePair<,>.Key] of ReturnValue;value |
 | System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;(TKey,TValue);;Argument[1];Property[System.Collections.Generic.KeyValuePair<,>.Value] of ReturnValue;value |
 | System.Collections.Generic;LinkedList<>;false;Add;(T);;Argument[0];Element of Argument[-1];value |

csharp/ql/test/library-tests/dataflow/library/FlowSummariesFiltered.expected

@@ -190,8 +190,6 @@
 | System.Collections.Generic;IDictionary<,>;true;set_Item;(TKey,TValue);;Argument[1];Property[System.Collections.Generic.KeyValuePair<,>.Value] of Element of Argument[-1];value |
 | System.Collections.Generic;IList<>;true;get_Item;(System.Int32);;Element of Argument[-1];ReturnValue;value |
 | System.Collections.Generic;IList<>;true;set_Item;(System.Int32,T);;Argument[1];Element of Argument[-1];value |
-| System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;();;Argument[0];Property[System.Collections.Generic.KeyValuePair<,>.Key] of ReturnValue;value |
-| System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;();;Argument[1];Property[System.Collections.Generic.KeyValuePair<,>.Value] of ReturnValue;value |
 | System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;(TKey,TValue);;Argument[0];Property[System.Collections.Generic.KeyValuePair<,>.Key] of ReturnValue;value |
 | System.Collections.Generic;KeyValuePair<,>;false;KeyValuePair;(TKey,TValue);;Argument[1];Property[System.Collections.Generic.KeyValuePair<,>.Value] of ReturnValue;value |
 | System.Collections.Generic;LinkedList<>;false;Add;(T);;Argument[0];Element of Argument[-1];value |