MAINTAINERS: Update VT-x maintainers

Eddie will not act as a VT-x maintainer anymore. So remove
him from the list.

Signed-off-by: Kevin Tian <kevin.tian@intel.com>
CC: Jun Nakajima <jun.nakajima@intel.com>
CC: Eddie Dong <eddie.dong@intel.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index a7fad84..4d0ffcf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -198,7 +198,6 @@ F:	xen/drivers/passthrough/vtd/
 
 INTEL(R) VT FOR X86 (VT-X)
 M:	Jun Nakajima <jun.nakajima@intel.com>
-M:	Eddie Dong <eddie.dong@intel.com>
 M:	Kevin Tian <kevin.tian@intel.com>
 S:	Supported
 F:	xen/arch/x86/hvm/vmx/