AP_Scripting: applets: fix luacheck issues in sport aerobattics and s… #42432

Job	Run time
build (base)	2m 32s
build (clang)	2m 3s
autotest (sitltest-plane-tests1a)	15m 4s
autotest (sitltest-plane-tests1b)	23m 47s
autotest (sitltest-quadplane)	15m 18s
	58m 44s

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