ARM: dts: msm: enable only single flash on 8917 QRD TMO phone

MSM8917 QRD TMP phone supports only single flash - flash_0/torch_0
Hence, remove the DT entries for second flash - flash_1, torch_1.

CRs-Fixed: 1002096
Change-Id: I5b7c28a5096038cb931a5f36adc798a40b18b9cb
Signed-off-by: Xiaonian Wang <xiaonian@codeaurora.org>