It is not possible for triggers to ignore validation rules without adding custom logic.

If the request to save a record originates outside of a Standard UI edit page, any `before` triggers you've defined will run prior to the execution of validation rules.  

Unfortunately, once all the `before` triggers are finished, Salesforce will run, without exception, the System validation rules (ie. required fields, max length, etc.) and User-Defined validation rules (ie. the formula-based rules you've defined).

Here is one strategy to bypass this behavior:

1. Add a "Skip Validation" Checkbox field to the object
2. Set the "Skip Validation" field to `TRUE` in a `before` trigger.
3. Add logic to your validation rules so that they do not execute if "Skip Validation" is set to `TRUE`.