I received a w2 with wages in Box 1 for income is not subject to income tax. How do I adjust my income to offset this w2?

I live in California and filed SOC 2298 Live-In Self-Certification Form which exempts the income from both Federal and state tax (IRS Notice 2014-7) but the form has not yet been processed so the W2 reflects the income as wages. How do I make an adjustment to subtract this income from my taxable income?

Thanks!