Don't #include ClangPersistentVariables.h from Process.h

Nothing from this header file was even being referenced in
Process.h anyway, so it was a completely unnecessary include.

llvm-svn: 231131
diff --git a/lldb/source/Symbol/CompactUnwindInfo.cpp b/lldb/source/Symbol/CompactUnwindInfo.cpp
index 8d2a27c..2167516 100644
--- a/lldb/source/Symbol/CompactUnwindInfo.cpp
+++ b/lldb/source/Symbol/CompactUnwindInfo.cpp
@@ -13,6 +13,7 @@
 #include <algorithm>
 
 #include "lldb/Core/ArchSpec.h"
+#include "lldb/Core/DataBufferHeap.h"
 #include "lldb/Core/Log.h"
 #include "lldb/Core/Module.h"
 #include "lldb/Core/Section.h"