vpr: Move functions_to_demote object out of .h into .cpp

Author: kmurray

vpr/src/util/vpr_error.cpp

@@ -5,6 +5,10 @@
 #include "vtr_log.h"
 #include "vpr_error.h"
 
+// Set of function names for which the VPR_THROW errors are treated
+// as VTR_LOG_WARN
+static std::unordered_set<std::string> functions_to_demote;
+
 /* Date:June 15th, 2013
  * Author: Daniel Chen
  * Purpose: Used to throw any internal VPR error or architecture

vpr/src/util/vpr_error.h

@@ -48,10 +48,6 @@ class VprError : public vtr::VtrError {
     t_vpr_error_type type_;
 };
 
-// Set of function names for which the VPR_THROW errors are treated
-// as VTR_LOG_WARN
-static std::unordered_set<std::string> functions_to_demote;
-
 // This function is used to save into the functions_to_demote set
 // all the function names which contain VPR_THROW errors that are
 // going to be demoted to be VTR_LOG_WARN