refactor: remove redundant compiler property declarations from module POM files

dao-factory/pom.xml

@@ -37,12 +37,6 @@
 
     <artifactId>dao-factory</artifactId>
 
-    <properties>
-        <maven.compiler.source>21</maven.compiler.source>
-        <maven.compiler.target>21</maven.compiler.target>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    </properties>
-
     <dependencies>
         <dependency>
             <groupId>com.h2database</groupId>

microservices-self-registration/pom.xml

@@ -39,25 +39,4 @@
         <module>greetingservice</module>
         <module>contextservice</module>
     </modules>
-
+</project>
-    <properties>
-        <java.version>21</java.version>
-        <maven.compiler.source>${java.version}</maven.compiler.source>
-        <maven.compiler.target>${java.version}</maven.compiler.target>
-    </properties>
-
-    <build>
-        <pluginManagement>
-            <plugins>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-compiler-plugin</artifactId>
-                    <version>3.8.1</version> <configuration>
-                    <source>${maven.compiler.source}</source>
-                    <target>${maven.compiler.target}</target>
-                </configuration>
-                </plugin>
-            </plugins>
-        </pluginManagement>
-    </build>
-</project>

rate-limiting-pattern/pom.xml

@@ -13,8 +13,6 @@
     <artifactId>rate-limiter</artifactId>
 
     <properties>
-        <maven.compiler.source>22</maven.compiler.source>
-        <maven.compiler.target>22</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <junit.jupiter.version>5.11.1</junit.jupiter.version>
         <junit.platform.version>1.11.1</junit.platform.version>