remove stray default maps; assume allocateBytes delivers 0's
remove stray default maps; assume allocateBytes delivers 0's

simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart,simolus3/sqlite3.dart