[JAVA-18446] Clean up (#13845)

libraries-files/pom.xml

@@ -40,13 +40,13 @@
         <dependency>
             <groupId>com.itextpdf</groupId>
             <artifactId>itext7-core</artifactId>
-	    <version>7.2.4</version>
+            <version>${itext7-core.version}</version>
             <type>pom</type>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>
-	    <version>3.23.1</version>
+            <version>${assertj-core.version}</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -54,6 +54,8 @@
     <properties>
         <org.ini4j.version>0.5.4</org.ini4j.version>
         <commons-configuration2>2.8.0</commons-configuration2>
+        <itext7-core.version>7.2.4</itext7-core.version>
+        <assertj-core.version>3.23.1</assertj-core.version>
     </properties>
 
 </project>

libraries-http/pom.xml

@@ -52,11 +52,6 @@
             <artifactId>async-http-client</artifactId>
             <version>${async.http.client.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.fasterxml.jackson.core</groupId>
-            <artifactId>jackson-databind</artifactId>
-            <version>${jackson.version}</version>
-        </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>

libraries-primitive/pom.xml

@@ -3,7 +3,6 @@
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <groupId>com.baeldung</groupId>
     <artifactId>libraries-primitive</artifactId>
     <version>1.0-SNAPSHOT</version>
     <name>libraries-primitive</name>

logging-modules/log4j2/pom.xml

@@ -63,7 +63,6 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>${maven-compiler-plugin.version}</version>
                 <configuration>
                     <proc>none</proc>
                 </configuration>