Remove unused SqliteError struct (#192)

While working on tursodatabase/turso#1900, I
realized that the rust `SqliteError` struct was not used.

I also used this opportunity to revamp the test script. The tests are
failing, on this branch and `main`, but with the new script it's clearer
what fails. The previous script was also missing a `&&`, so it wouldn't
have run to completion.

@penberg

Author: penberg

index.d.ts

@@ -32,12 +32,6 @@ export interface RunResult {
 }
 /** Retrieve next row from an iterator synchronously. Needed for better-sqlite3 API compatibility. */
 export declare function iteratorNextSync(iter: RowsIterator): Record
-/** SQLite error object. */
-export declare class SqliteError {
-  message: string
-  code: string
-  rawCode: number
-}
 /** SQLite database connection. */
 export declare class Database {
   /**

index.js

@@ -310,9 +310,8 @@ if (!nativeBinding) {
   throw new Error(`Failed to load native binding`)
 }
 
-const { SqliteError, Database, databasePrepareSync, databaseSyncSync, Statement, statementIterateSync, RowsIterator, iteratorNextSync, Record } = nativeBinding
+const { Database, databasePrepareSync, databaseSyncSync, Statement, statementIterateSync, RowsIterator, iteratorNextSync, Record } = nativeBinding
 
-module.exports.SqliteError = SqliteError
 module.exports.Database = Database
 module.exports.databasePrepareSync = databasePrepareSync
 module.exports.databaseSyncSync = databaseSyncSync