fvp: cleanup neoverse_e1 model usage

Model option 'gicd_virtual_lpi' is not been used by neoverse_e1 FVP
model, so remove the unused option which is not been set by run_config
and remove duplicated model files.

This patch is direct outcome from code review comments from here:
https://review.trustedfirmware.org/c/ci/tf-a-ci-scripts/+/29474/3?tab=comments

Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
Change-Id: I69c2b19a72232c4d2a1bc7134f4381f1142b783d
(cherry picked from commit 820d06ac13832c10a016ce214c510f55e69139eb)
8 files changed