Revert "QcomModulePkg: Update vm-system CmdLine to use GetSystemPath"

This reverts commit f0149abe41163d66d8f18351162ad9e10587c3e3. It was
added to support secondary VM cmdline updates, which is no longer
required as the secondary VM loading support is removed from ABL.

Change-Id: I2d9366b399a646952ee30ea4740fbd76593a4f07
3 files changed