pwm: tiehrpwm: Fix runtime PM imbalance at unbind

Remove unbalanced RPM put at driver unbind which resulted in a negative
usage count.

Fixes: 19891b20 ("pwm: pwm-tiehrpwm: PWM driver support for EHRPWM")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-tiehrpwm.c

@@ -504,7 +504,6 @@ static int ehrpwm_pwm_remove(struct platform_device *pdev)
 
 	clk_unprepare(pc->tbclk);
 
-	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	return pwmchip_remove(&pc->chip);
 }