Remove extra GetNewUnit calls from AD14 #1177

Job	Run time
build-postlib-release	9m 50s
build-drivers-release	5m 20s
build-all-debug-single	3m 16s
build-all-debug	4m 42s
build-test-uadriver-debug	2m 7s
rtest-modules-debug	4m 37s
rtest-module-drivers	1m 32s
build-openfast-release	3m 53s
build-fastfarm-release	10m 31s
build-interfaces-release	3m 27s
rtest-interfaces	6h 0m 13s
rtest-OF-5MW_OC4Jckt_DLL_WTurb_WavesIrr_MGrowth	57s
rtest-OF-5MW_OC3Mnpl_DLL_WTurb_WavesIrr	1h 30m 59s
rtest-OF	6h 0m 14s
rtest-OF-5MW_Land_BD_DLL_WTurb	1h 31m 6s
rtest-OF-5MW_OC3Trpd_DLL_WSt_WavesReg	1h 30m 57s
rtest-OF-5MW_OC4Semi_WSt_WavesWN	1h 30m 57s
rtest-OF-linearization	6h 0m 13s
rtest-FF	2m 14s
	1d 0h 57m 5s

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