Remove unused deallocate method

Author: simolus3

sqlite3/lib/src/ffi/bindings.dart

@@ -919,9 +919,6 @@ final class FfiDatabase implements RawSqliteDatabase, Finalizable {
     return libsqlite3.sqlite3_last_insert_rowid(db);
   }
 
-  @override
-  void deallocateAdditionalMemory() {}
-
   @override
   int sqlite3_create_collation_v2({
     required Uint8List collationName,

sqlite3/lib/src/implementation/bindings.dart

@@ -189,13 +189,6 @@ abstract interface class RawSqliteDatabase {
   int sqlite3_close_v2();
   String sqlite3_errmsg();
 
-  /// Deallocate additional memory that the raw implementation may had to use
-  /// for some type conversions for previous method invocations.
-  ///
-  /// This is called by the higher-level implementation when a database is
-  /// closed.
-  void deallocateAdditionalMemory();
-
   void sqlite3_update_hook(RawUpdateHook? hook);
 
   void sqlite3_commit_hook(RawCommitHook? hook);

sqlite3/lib/src/implementation/database.dart

@@ -52,8 +52,6 @@ final class FinalizableDatabase extends FinalizablePart {
       );
     }
 
-    database.deallocateAdditionalMemory();
-
     if (exception != null) {
       throw exception;
     }

sqlite3/lib/src/wasm/bindings.dart

@@ -257,9 +257,6 @@ final class WasmDatabase implements RawSqliteDatabase {
     bindings.sqlite3_extended_result_codes(db, onoff);
   }
 
-  @override
-  void deallocateAdditionalMemory() {}
-
   @override
   RawStatementCompiler newCompiler(List<int> utf8EncodedSql) {
     final ptr = bindings.allocateBytes(utf8EncodedSql);