update docs [skip ci]

docs/AllRectorsOverview.md

@@ -1,4 +1,4 @@
-# All 418 Rectors Overview
+# All 419 Rectors Overview
 
 - [Projects](#projects)
 - [General](#general)
@@ -2277,6 +2277,32 @@ Remove unreachable statements
 
 <br>
 
+### `RemoveUnusedClassesRector`
+
+- class: `Rector\DeadCode\Rector\Class_\RemoveUnusedClassesRector`
+
+Remove unused classes without interface
+
+```diff
+ interface SomeInterface
+ {
+ }
+
+ class SomeClass implements SomeInterface
+ {
+     public function run($items)
+     {
+         return null;
+     }
+-}
+-
+-class NowhereUsedClass
+-{
+ }
+```
+
+<br>
+
 ### `RemoveUnusedDoctrineEntityMethodAndPropertyRector`
 
 - class: `Rector\DeadCode\Rector\Class_\RemoveUnusedDoctrineEntityMethodAndPropertyRector`