Fix errant method call

Author: swissspidy

src/DB_Command_SQLite.php

@@ -443,7 +443,7 @@ protected function sqlite_import( $file, $assoc_args ) {
 
 		WP_CLI::debug( "Running shell command: {$command}", 'db' );
 
-		$result = \WP_CLI\Process::create( $command, null, null )->run( file_get_contents( $import_file ) );
+		$result = \WP_CLI\Process::create( $command, null, null )->run();
 
 		unlink( $import_file );