Remove stale FEATURE_VULKAN_HARDWARE_COMPUTE check

The description of PackageManager#FEATURE_VULKAN_HARDWARE_COMPUTE in
API 26 is:

  Compute level 0 indicates support for the VariablePointers SPIR-V
  capability defined by the SPV_KHR_variable_pointers extension.

However, the CTS test was also requiring the VK_KHR_16bit_storage
extension, which was removed from the final definition of the feature.
This change removes that stale requirement.

Bug: 68056471
Test: VulkanFeaturesTest#testVulkanHardwareFeatures on a device that
      advertises this system feature but doesn't have
      VK_KHR_16bit_storage. Test failed previously, passes with this
      change.
Merged-In: I38ccfd617a26ee3280c002ed22e25bdb332c7839
Change-Id: I6dbe2cf9d72372a2301dcf6abb59b507dc2d5db4
1 file changed