Basically, you can’t remove the password.

See link below & see if it helps.

https://community.intuit.com/questions/1389802-remove-password-requirement

Resolution for '1389802remove- issue: 'I do not want a password' available: Yes.

The 1389802remove- issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 1389802remove- issue yourself by looking for a resolution described in the article. If it is a complex 1389802remove- issue or you are unable to solve the issue, you may contact us by clicking here or by using other 1389802remove- support options.

For more information about resolving issues related to 1389802remove- in Quickbooks/QBO or to get support for the issue 'I do not want a password', click the link below: