Get rid of wrap-string-view

luprex/core/cpp/drivenengine.hpp

@@ -343,7 +343,7 @@ public:
     // delete it.  Closing a channel prevents it from showing up in
     // 'drv_list_channels'.  
     //
-    void drv_notify_close(int chid, eng::string_view err);
+    void drv_notify_close(int chid, std::string_view err);
 
     // Notify the DrivenEngine that somebody connected to an incoming port.
     // This will cause the DrivenEngine to allocate a new channel and put the
@@ -361,7 +361,7 @@ public:
     // Set the lua source code.  The driver is expected to read the lua source
     // code and store it (using this function) once before invoking 
     //
-    void drv_add_lua_source(eng::string_view fn, eng::string_view data);
+    void drv_add_lua_source(std::string_view fn, std::string_view data);
     
     // Invoke the init or update event.
     //