Remove NestedForDepth Checkstyle rule

The rule has led to patterns like `stream().forEach()` in test parameter
generation where plain nested loops would be clearer. Remove the rule
and drop the stale `NestedForDepth` comment in `TestDecompression`.

Fixes #6665

Author: dlwldnjs1009

config/checkstyle/checkstyle.xml

@@ -118,7 +118,7 @@
     <module name="IllegalThrows"/>
     <module name="ModifiedControlVariable"/>
     <module name="MultipleVariableDeclarations"/>
-    <module name="NestedForDepth"/>
+
     <module name="NestedIfDepth">
       <!-- TODO: reduce this number -->
       <property name="max" value="4"/>

src/protocol/http/src/test/java/org/apache/jmeter/protocol/http/sampler/TestDecompression.java

@@ -53,7 +53,6 @@ enum ServerGzip {
 
     public static List<Arguments> mockServerParams() {
         List<Arguments> res = new ArrayList<>();
-        // Nested for depth is 2 (max allowed is 1). [NestedForDepth]
         Arrays.stream(HTTPSamplerFactory.getImplementations()).forEach(httpImpl -> {
             for (ClientGzip clientGzip : ClientGzip.values()) {
                 for (ServerGzip serverGzip : ServerGzip.values()) {