more dead code and some whitespace cleanup

src/USER-DPD/fix_eos_table.cpp

@@ -195,7 +195,7 @@ void FixEOStable::read_table(Table *tb, Table *tb2, char *file, char *keyword)
 
   // open file
 
-  FILE *fp = fopen(file,"r");
+  FILE *fp = force->open_potential(file);
   if (fp == NULL) {
     char str[128];
     sprintf(str,"Cannot open file %s",file);