clk: rockchip: remove unused mclk_pdm0_p/pdm0_p definitions

When -Wunused-const-variable is enabled (not the default),
there is a warning about two definitions in this file:

In file included from drivers/clk/rockchip/clk-rk3576.c:14:
drivers/clk/rockchip/clk-rk3576.c:334:7: error: 'mclk_pdm0_p' defined but not used [-Werror=unused-const-variable=]
334 | PNAME(mclk_pdm0_p) = { "mclk_pdm0_src_top", "xin24m" };
| ^~~~~~~~~~~
drivers/clk/rockchip/clk.h:564:43: note: in definition of macro 'PNAME'
564 | #define PNAME(x) static const char *const x[] __initconst
| ^
drivers/clk/rockchip/clk-rk3576.c:333:7: error: 'pdm0_p' defined but not used [-Werror=unused-const-variable=]
333 | PNAME(pdm0_p) = { "clk_pdm0_src_top", "xin24m" };
| ^~~~~~
drivers/clk/rockchip/clk.h:564:43: note: in definition of macro 'PNAME'
564 | #define PNAME(x) static const char *const x[] __initconst
| ^

Remove them for the moment. If they are needed later, they can
be added back at that point.

Fixes: cc40f5baa91b ("clk: rockchip: Add clock controller for the RK3576")
Signed-off-by: Arnd Bergmann <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/rockchip/clk-rk3576.c

···
 PNAME(mclk_sai8_8ch_p)			= { "mclk_sai8_8ch_src", "sai1_mclkin" };
 PNAME(mclk_sai9_8ch_p)			= { "mclk_sai9_8ch_src", "sai1_mclkin" };
 PNAME(uart1_p)				= { "clk_uart1_src_top", "xin24m" };
-PNAME(pdm0_p)				= { "clk_pdm0_src_top", "xin24m" };
-PNAME(mclk_pdm0_p)			= { "mclk_pdm0_src_top", "xin24m" };
 PNAME(clk_gmac1_ptp_ref_src_p)		= { "gpll", "cpll", "gmac1_ptp_refclk_in" };
 PNAME(clk_gmac0_ptp_ref_src_p)		= { "gpll", "cpll", "gmac0_ptp_refclk_in" };
 PNAME(dclk_ebc_p)			= { "gpll", "cpll", "vpll", "aupll", "lpll_dummy",