Update for latest hl2sdk-deadlock & dota changes

Author: GAMMACASE

src/schemareader.h

@@ -108,11 +108,7 @@ class SchemaReader
 	std::string SplitTemplatedName( CSchemaType *type ) const;
 
 private:
-#if SOURCE_ENGINE == SE_CS2
 	CKV3Arena m_KV3Context;
-#else
-	CKeyValues3Context m_KV3Context;
-#endif
 
 	std::map<CSchemaType *, int> m_TypeMap;
 	std::filesystem::path m_OutPath;