ARM: OMAP4+: clock: remove DEFINE_CLK_OMAP_HSDIVIDER macro

This clock type declaration is no longer used as all omap4+ SoC clock
data has been moved to DT, thus remove it.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Reviewed-by: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Paul Walmsley <paul@pwsan.com>