Revert "Do not load file with same realpath twice when requiring"

This reverts commit ddb85c5d2bdf75a83eb163856508691a7436b446.

This commit causes unexpected warnings in TestTranscode#test_loading_race
occasionally in CI.

1 files changed, 0 insertions, 1 deletions

diff --git a/vm_core.h b/vm_core.h
index 6b627f4a82..58243b133e 100644
--- a/vm_core.h
+++ b/vm_core.h
@@ -631,7 +631,6 @@ typedef struct rb_vm_struct {
     VALUE expanded_load_path;
     VALUE loaded_features;
     VALUE loaded_features_snapshot;
-    VALUE loaded_features_realpaths;
     struct st_table *loaded_features_index;
     struct st_table *loading_table;