clk: qcom: clk-rpmh: remove LN_BB_CLK1 as votable clock

LN_BB_CLK1 should not be voted for explicitly on SDM845.
Instead, consumers should vote for RPMH_CXO_CLK through
ARC as LN_BB_CLK1 sources CXO in this target.

Change-Id: Ia1dc2d0c76f68b0d0d2f24eb7db4f8fe68db05d5
Signed-off-by: Osvaldo Banuelos <osvaldob@codeaurora.org>