Don't #include FormatManager.h from Debugger.h

Debugger.h is a huge file that gets included everywhere, and
FormatManager.h brings in a ton of unnecessary stuff and doesn't
even use anything from it in the header.

llvm-svn: 231161
diff --git a/lldb/source/Interpreter/CommandObject.cpp b/lldb/source/Interpreter/CommandObject.cpp
index 753e720..021442e 100644
--- a/lldb/source/Interpreter/CommandObject.cpp
+++ b/lldb/source/Interpreter/CommandObject.cpp
@@ -25,6 +25,7 @@
 // FIXME: Make a separate file for the completers.
 #include "lldb/Host/FileSpec.h"
 #include "lldb/Core/FileSpecList.h"
+#include "lldb/DataFormatters/FormatManager.h"
 #include "lldb/Target/Process.h"
 #include "lldb/Target/Target.h"