clk: ast2600: remove unused variable 'eclk_parent_names'

drivers/clk/clk-ast2600.c:119:27: warning:
 eclk_parent_names defined but not used [-Wunused-const-variable=]

It is never used, so can be removed.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lkml.kernel.org/r/20191015115117.23504-1-yuehaibing@huawei.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>