pinctrl: qcom: pinctrl-msm8976: Remove unused variable 'nav_tsync_groups'

pinctrl: qcom: pinctrl-msm8976: Remove unused variable 'nav_tsync_groups'

Fixes the following W=1 kernel build warning(s):

 drivers/pinctrl/qcom/pinctrl-msm8976.c:802:27: warning: ‘nav_tsync_groups’ defined but not used [-Wunused-const-variable=]
 802 | static const char
 const nav_tsync_groups[] = {
 | ^~~~~~~~~~~~~~~~

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Del Regno <kholk11@gmail.com>
Cc: linux-arm-msm@vger.kernel.org
Link: https://lore.kernel.org/r/20200713144930.1034632-10-lee.jones@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>