Remove `struct RData` deprecated by `struct RTypedData` #5652

Job	Run time
omnibus compilations, trigger	2s
omnibus compilations, #1	26m 56s
omnibus compilations, #2	37m 26s
omnibus compilations, #4	24m 0s
omnibus compilations, #6	31m 0s
omnibus compilations, #11	27m 22s
omnibus compilations, #12	13m 19s
omnibus compilations, #3	35m 42s
omnibus compilations, #7	36m 13s
omnibus compilations, #5	29m 39s
omnibus compilations, #8	30m 24s
omnibus compilations, #9	30m 24s
omnibus compilations, #10	29m 43s
omnibus compilations, result	7s
	5h 52m 17s

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