[tune] trim kwargs in shim instantiation functions (#12544)

python/ray/tune/suggest/__init__.py

@@ -1,3 +1,4 @@
+from ray.utils import get_function_args
 from ray.tune.suggest.search import SearchAlgorithm
 from ray.tune.suggest.basic_variant import BasicVariantGenerator
 from ray.tune.suggest.suggestion import Searcher, ConcurrencyLimiter
@@ -93,7 +94,11 @@ def create_searcher(
             f"Got: {search_alg}")
 
     SearcherClass = SEARCH_ALG_IMPORT[search_alg]()
-    return SearcherClass(**kwargs)
+
+    search_alg_args = get_function_args(SearcherClass)
+    trimmed_kwargs = {k: v for k, v in kwargs.items() if k in search_alg_args}
+
+    return SearcherClass(**trimmed_kwargs)
 
 
 __all__ = [