OvmfPkg: Remove EdkShellBinPkg in FDF

Remove EdkShellBinPkg in OvmfPkgIa32.fdf,
OvmfPkg/OvmfPkgIa32X64.fdf amd OvmfPkg/OvmfPkgX64.fdf.
https://bugzilla.tianocore.org/show_bug.cgi?id=1108

v2: Remove USE_OLD_SHELL in DSC and FDF because it will be
    unnecessary to use it.

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

OvmfPkg/OvmfPkgIa32X64.dsc

@@ -514,9 +514,7 @@
   gEfiNetworkPkgTokenSpaceGuid.PcdAllowHttpConnections|TRUE
 !endif
 
-!ifndef $(USE_OLD_SHELL)
   gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdShellFile|{ 0x83, 0xA5, 0x04, 0x7C, 0x3E, 0x9E, 0x1C, 0x4F, 0xAD, 0x65, 0xE0, 0x52, 0x68, 0xD0, 0xB4, 0xD1 }
-!endif
 
 !if $(SMM_REQUIRE) == TRUE
   gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmStackSize|0x4000
@@ -840,7 +838,6 @@
   OvmfPkg/Csm/Csm16/Csm16.inf
 !endif
 
-!ifndef $(USE_OLD_SHELL)
   ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf {
     <PcdsFixedAtBuild>
       gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE
@@ -867,7 +864,6 @@
       gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE
       gEfiMdePkgTokenSpaceGuid.PcdUefiLibMaxPrintBufferSize|8000
   }
-!endif
 
 !if $(SECURE_BOOT_ENABLE) == TRUE
   SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigDxe.inf