remove moved examples from CI #164

Job	Run time
build-arduino (release-v4.4, weather)	4m 47s
build (release-v4.4, calibration_helper)	2m 57s
build (release-v4.4, demo)	2m 59s
build (release-v4.4, dragon)	2m 10s
build (release-v4.4, grayscale_test)	2m 7s
build (release-v4.4, www-image)	2m 19s
build (release-v5.1, calibration_helper)	2m 8s
build (release-v5.1, demo)	2m 54s
build (release-v5.1, dragon)	2m 11s
build (release-v5.1, grayscale_test)	3m 38s
build (release-v5.1, www-image)	2m 13s
build (release-v5.1, screen_diag)	2m 9s
	32m 32s

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