Merge pull request #14429 from tamasvajk/relax-metadata_handle-keyset

C#: Remove `keyset` from `metadata_handle` relation

csharp/downgrades/cc2eccd6026e5405594b75eb9d2d3f4646747ccd/upgrade.properties

@@ -0,0 +1,2 @@
+description: Add keyset to metadata_handle
+compatibility: full

csharp/ql/lib/semmlecode.csharp.dbscheme

@@ -1292,7 +1292,7 @@ expr_argument_name(
 lambda_expr_return_type(
   unique int id: @lambda_expr ref,
   int type_id: @type_or_ref ref);
-  
+
 /** CONTROL/DATA FLOW **/
 
 @control_flow_element = @stmt | @expr;
@@ -2074,5 +2074,4 @@ cil_attribute_positional_argument(
 @metadata_entity = @cil_method | @cil_type | @cil_field | @cil_property | @field | @property |
     @callable | @value_or_ref_type | @void_type;
 
-#keyset[entity, location]
 metadata_handle(int entity : @metadata_entity ref, int location: @assembly ref, int handle: int ref)

csharp/ql/lib/upgrades/585d6402ff8ba3d15114a869d205bdf6d4e0aa3f/upgrade.properties

@@ -0,0 +1,2 @@
+description: Remove keyset from metadata_handle
+compatibility: full