drop default internal sys parameter

Long-term this will move to an externally defined sys implementation
library.

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I0d882f6af872389be3a0fee5d70736813d3b2759
diff --git a/src/ipmiblob/ipmi_handler.cpp b/src/ipmiblob/ipmi_handler.cpp
index 0d7c44e..81a70ca 100644
--- a/src/ipmiblob/ipmi_handler.cpp
+++ b/src/ipmiblob/ipmi_handler.cpp
@@ -36,7 +36,7 @@
 
 std::unique_ptr<IpmiInterface> IpmiHandler::CreateIpmiHandler()
 {
-    return std::make_unique<IpmiHandler>();
+    return std::make_unique<IpmiHandler>(std::make_unique<internal::SysImpl>());
 }
 
 void IpmiHandler::open()