Untag pass Kernel#require specs

Author: eregon

spec/tags/core/kernel/require_tags.txt

@@ -2,8 +2,6 @@ slow:Kernel#require (concurrently) blocks based on the path
 slow:Kernel.require (concurrently) blocks based on the path
 slow:Kernel#require ($LOADED_FEATURES) unicode_normalize is part of core and not $LOADED_FEATURES
 slow:Kernel.require ($LOADED_FEATURES) unicode_normalize is part of core and not $LOADED_FEATURES
-fails:Kernel#require (non-extensioned path) loads a .rb extensioned file when a C-extension file exists on an earlier load path
-fails:Kernel#require (non-extensioned path) does not load a feature twice when $LOAD_PATH has been modified
 slow:Kernel#require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required
 slow:Kernel.require ($LOADED_FEATURES) complex, enumerator, rational, thread, ruby2_keywords are already required
 slow:Kernel#require complex, enumerator, rational, thread, ruby2_keywords, fiber are already required