Move Vulkan version check to VkJsonTests

We initially implemented this test case on the device side by querying
package manager. Since then, we've added various other cases which
inspect the VkJson output, which includes far more useful information
than just a "does it exist" bit. Move the version check across to the
new approach.

Bug: b/121202737
Change-Id: I28dde3fea3df8805688f9d41315e32d4776c48d7
2 files changed