OvmfPkg/Sec: Remove duplicate PCD in INF file

In Sec driver, PcdOvmfWorkAreaBase appears twice in [Pcd] section, so
remove the duplicate one.

Signed-off-by: Qihang Gao <gaoqihang@loongson.cn>

OvmfPkg/Sec/SecMain.inf

diff --git a/OvmfPkg/Sec/SecMain.inf b/OvmfPkg/Sec/SecMain.inf
index 4a91fb2..a05da3d 100644
--- a/OvmfPkg/Sec/SecMain.inf
+++ b/OvmfPkg/Sec/SecMain.inf
@@ -84,7 +84,6 @@
   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecValidatedEnd

   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecGhcbBackupBase

   gUefiOvmfPkgTokenSpaceGuid.PcdTdxAcceptPageSize

-  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase

   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecApicPageTableBase

   gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecApicPageTableSize