[melobot] Fix bugs in importing caches getting

Author: aicorein

src/melobot/_imp.py

@@ -288,9 +288,6 @@ def import_mod(
         pre_cache_len = ModuleCacher().get_len()
 
         if path is not None:
-            if load_cache and (mod_cache := Importer.get_cache(Path(path))) is not None:
-                return mod_cache
-
             try:
                 sep = name.rindex(".")
                 Importer.import_mod(name[:sep], Path(path).parent, True, True)

src/melobot/_meta.py

@@ -4,7 +4,7 @@
 
 from .typ import T
 
-__version__ = "3.0.0rc19"
+__version__ = "3.0.0rc20"
 
 
 def _version_str_to_info(s: str) -> VersionInfo: