lm4: Drop LED blinking from watchdog task
lm4: Drop LED blinking from watchdog task

We don't really need this, and want to free up the LED for other
debugging uses, so drop it.

BUG=chrome-os-partner:10145
TEST=build and boot on snow (for want of a better test)

Change-Id: I62aad38e9b29556dde0a3bf8e10a85df577a8e73
Signed-off-by: Simon Glass <c00b0378376498bd9cd974c388df8854c0131d27@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/24392
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

eatbyte/chromium-ec,alterapraxisptyltd/chromium-ec,mtk09422/chromiumos-platform-ec,coreboot/chrome-ec,alterapraxisptyltd/chromium-ec,thehobn/ec,eatbyte/chromium-ec,longsleep/ec,alterapraxisptyltd/chromium-ec,akappy7/ChromeOS_EC_LED_Diagnostics,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,coreboot/chrome-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,coreboot/chrome-ec,thehobn/ec,mtk09422/chromiumos-platform-ec,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics,thehobn/ec,fourier49/BIZ_EC,coreboot/chrome-ec,gelraen/cros-ec,fourier49/BIZ_EC,gelraen/cros-ec,md5555/ec,eatbyte/chromium-ec,eatbyte/chromium-ec,md5555/ec,alterapraxisptyltd/chromium-ec,fourier49/BZ_DEV_EC,md5555/ec,gelraen/cros-ec,gelraen/cros-ec,fourier49/BZ_DEV_EC,coreboot/chrome-ec,akappy7/ChromeOS_EC_LED_Diagnostics,thehobn/ec,fourier49/BZ_DEV_EC,longsleep/ec,akappy7/ChromeOS_EC_LED_Diagnostics,md5555/ec,longsleep/ec,coreboot/chrome-ec