Readme: Remove Pulsar 8 install instructions
Readme: Remove Pulsar 8 install instructions

Signed-off-by: Scott Ware <73d8c51564b4eae79a1225e2fb09ab1ef1f00b4b@intel.com>

intel-iot-devkit/meta-iot-cloud,intel-iot-devkit/meta-iot-cloud,intel-iot-devkit/meta-iot-cloud