clk: qcom: debugcc-sm8150: Remove measurement support for unused clocks

Clock framework limits the number of parents for any clock
to 256. Remove support for rarely used clocks that have been
listed as parents for the GCC debug mux in order to work
around this issue temporarily.

Change-Id: I21c537c284b235584104dbab060a3684f818645b
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>