ARM: dts: msm: Remove wrong modem cpu cti for MSM8937

On msm8937, there is only one modem cpu cti. Remove the wrong modem
cpu cti to fix system reset issue when do cti test.

CRs-Fixed: 2263288
Change-Id: I41688a6cea50dace7ac265315cfce7938b6ce916
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>