chore(pmd): replace deprecated Ncss*Count PMD's rules by the NcssCount

Quote from https://pmd.github.io/2017/12/15/PMD-6.0.0/
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The new Java rule NcssCount (category design) replaces the three rules “NcssConstructorCount”,
“NcssMethodCount”, and “NcssTypeCount”. The new rule uses the metrics framework to achieve the
same. It has two properties, to define the report level for method and class sizes separately.
Constructors and methods are considered the same.
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Part of #1018

[skip ci]

Author: php-coder

src/main/config/pmd.xml

@@ -152,9 +152,7 @@
 	<rule ref="category/java/design.xml/LogicInversion" />
 	<!--<rule ref="category/java/design.xml/LoosePackageCoupling" />-->
 	<rule ref="category/java/design.xml/ModifiedCyclomaticComplexity" />
-	<rule ref="category/java/design.xml/NcssConstructorCount" />
-	<rule ref="category/java/design.xml/NcssMethodCount" />
-	<rule ref="category/java/design.xml/NcssTypeCount" />
+	<rule ref="category/java/design.xml/NcssCount" />
 	<rule ref="category/java/design.xml/NPathComplexity" />
 	<rule ref="category/java/design.xml/SignatureDeclareThrowsException" />
 	<rule ref="category/java/design.xml/SimplifiedTernary" />