Remove removal step from `bot/build.sh` #118

Job	Run time
eessi_container_script (help)	1m 38s
eessi_container_script (listrepos_custom)	1m 33s
eessi_container_script (unionfs)	2m 38s
eessi_container_script (shell)	2m 32s
eessi_container_script (run)	3m 14s
eessi_container_script (container)	2m 20s
eessi_container_script (listrepos_default)	2m 11s
eessi_container_script (resume)	3m 21s
	19m 27s

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