Remove NoVoidGetterMethodRule as not that practical (#125)

Author: TomasVotruba

config/naming-rules.neon

@@ -1,7 +1,6 @@
 rules:
     - Symplify\PHPStanRules\Rules\Explicit\ExplicitClassPrefixSuffixRule
     - Symplify\PHPStanRules\Rules\NoReturnSetterMethodRule
-    - Symplify\PHPStanRules\Rules\NoVoidGetterMethodRule
     - Symplify\PHPStanRules\Rules\UppercaseConstantRule
     - Symplify\PHPStanRules\Rules\ClassNameRespectsParentSuffixRule
     - Symplify\PHPStanRules\Rules\CheckTypehintCallerTypeRule

docs/rules_overview.md

@@ -1,4 +1,4 @@
-# 41 Rules Overview
+# 40 Rules Overview
 
 ## AnnotateRegexClassConstWithRegexLinkRule
 
@@ -1100,40 +1100,6 @@ final class SkipApiMock extends TestCase
 
 <br>
 
-## NoVoidGetterMethodRule
-
-Getter method must return something, not void
-
-- class: [`Symplify\PHPStanRules\Rules\NoVoidGetterMethodRule`](../src/Rules/NoVoidGetterMethodRule.php)
-
-```php
-final class SomeClass
-{
-    public function getData(): void
-    {
-        // ...
-    }
-}
-```
-
-:x:
-
-<br>
-
-```php
-final class SomeClass
-{
-    public function getData(): array
-    {
-        // ...
-    }
-}
-```
-
-:+1:
-
-<br>
-
 ## PreferredClassRule
 
 Instead of "%s" class/interface use "%s"