diff --git a/jedi/evaluate/context/function.py b/jedi/evaluate/context/function.py
index 02382831..0128db9e 100644
--- a/jedi/evaluate/context/function.py
+++ b/jedi/evaluate/context/function.py
@@ -169,14 +169,6 @@ class MethodContext(FunctionContext):
 
 
 class FunctionExecutionContext(TreeContext):
-    """
-    This class is used to evaluate functions and their returns.
-
-    This is the most complicated class, because it contains the logic to
-    transfer parameters. It is even more complicated, because there may be
-    multiple calls to functions and recursion has to be avoided. But this is
-    responsibility of the recursion module.
-    """
     function_execution_filter = FunctionExecutionFilter
 
     def __init__(self, evaluator, parent_context, function_context, var_args):
diff --git a/jedi/evaluate/context/instance.py b/jedi/evaluate/context/instance.py
index 120c3bc2..f16d0fda 100644
--- a/jedi/evaluate/context/instance.py
+++ b/jedi/evaluate/context/instance.py
@@ -59,9 +59,6 @@ class AnonymousInstanceArguments(AnonymousArguments):
 
 
 class AbstractInstanceContext(Context):
-    """
-    This class is used to evaluate instances.
-    """
     api_type = u'instance'
 
     def __init__(self, evaluator, parent_context, class_context, var_args):