Method clearGamma

tests/fl/chipsets/ucs7604.cpp:191–191

    // Set gamma override (accesses protected mSettings directly)
    void setGamma(float gamma) { this->mSettings.mGamma = gamma; }
    void clearGamma() { this->mSettings.mGamma.reset(); }
};

/// Test wrapper that exposes protected showPixels method and provides access to captured bytes