Vlv2TbltDevicePkg: Remove unused modules/libraries

* Delete platform specific SerialPortLib
* Delete platform specific Metronome module
* Delete platform specific BootScriptSaveDxe module
* Delete SmmSwDispatch2OnSmmSwDispatchThunk module
* Delete SmramSaveInfoHandlerSmm module
* Delete unused FSP content
* Delete unused I2C content
* Delete unused Stitch content
* Delete unused portions of PlatformSmm module

Cc: Zailiang Sun <zailiang.sun@intel.com>
Cc: Yi Qian <yi.qian@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-By: Zailiang Sun <zailiang.sun@intel.com>