removed unused variables

Author: rpgeeganage

src/compiler/checker.ts

@@ -536,8 +536,6 @@ namespace ts {
         let deferredGlobalTemplateStringsArrayType: ObjectType;
         let deferredGlobalImportMetaType: ObjectType;
         let deferredGlobalExtractSymbol: Symbol;
-        let deferredGlobalExcludeSymbol: Symbol;
-        let deferredGlobalPickSymbol: Symbol;
         let deferredGlobalOmitSymbol: Symbol;
         let deferredGlobalBigIntType: ObjectType;
 
@@ -9274,14 +9272,6 @@ namespace ts {
             return deferredGlobalExtractSymbol || (deferredGlobalExtractSymbol = getGlobalSymbol("Extract" as __String, SymbolFlags.TypeAlias, Diagnostics.Cannot_find_global_type_0)!); // TODO: GH#18217
         }
 
-        function getGlobalExcludeSymbol(): Symbol {
-            return deferredGlobalExcludeSymbol || (deferredGlobalExcludeSymbol = getGlobalSymbol("Exclude" as __String, SymbolFlags.TypeAlias, Diagnostics.Cannot_find_global_type_0)!); // TODO: GH#18217
-        }
-
-        function getGlobalPickSymbol(): Symbol {
-            return deferredGlobalPickSymbol || (deferredGlobalPickSymbol = getGlobalSymbol("Pick" as __String, SymbolFlags.TypeAlias, Diagnostics.Cannot_find_global_type_0)!); // TODO: GH#18217
-        }
-
         function getGlobalOmitSymbol(): Symbol {
             return deferredGlobalOmitSymbol || (deferredGlobalOmitSymbol = getGlobalSymbol("Omit" as __String, SymbolFlags.TypeAlias, Diagnostics.Cannot_find_global_type_0)!); // TODO: GH#18217
         }