dasboot: Some devices don't need this anymore, so remove from common.mk

to add it to a specific device for debugging purposes, stick this in your device's vanir_*.mk

PRODUCT_COPY_FILES += \
    vendor/vanir/proprietary/common/etc/init.d/dasboot:system/etc/init.d/dasboot

Change-Id: I0af4df3d660447a64b66a35e52a96df8fab783f1