clk: qcom: rpm: Remove an unused field in struct rpm_cc

In "struct rpm_cc", the 'rpm' field is unused.

Remove it.

Found with cppcheck, unusedStructMember.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/9f92330c717e6f2dab27b1307565ffb108c304a7.1713017032.git.christophe.jaillet@wanadoo.frSigned-off-by: Bjorn Andersson <andersson@kernel.org>

drivers/clk/qcom/clk-rpm.c

@@ -98,7 +98,6 @@ struct clk_rpm {
 };
 
 struct rpm_cc {
-	struct qcom_rpm *rpm;
 	struct clk_rpm **clks;
 	size_t num_clks;
 	u32 xo_buffer_value;