refactor(dep): remove unused maven-shade plugin

pom.xml

@@ -78,7 +78,6 @@
         <maven-failsafe-plugin.version>3.0.0-M7</maven-failsafe-plugin.version>
         <maven-checkstyle-plugin.version>3.2.0</maven-checkstyle-plugin.version>
         <maven-jar-plugin.version>3.2.2</maven-jar-plugin.version>
-        <maven-shade-plugin.version>3.3.0</maven-shade-plugin.version>
         <maven-javadoc-plugin.version>3.4.1</maven-javadoc-plugin.version>
 
     </properties>
@@ -229,11 +228,6 @@
                     <artifactId>maven-jar-plugin</artifactId>
                     <version>${maven-jar-plugin.version}</version>
                 </plugin>
-                <plugin>
-                    <groupId>org.apache.maven.plugins</groupId>
-                    <artifactId>maven-shade-plugin</artifactId>
-                    <version>${maven-shade-plugin.version}</version>
-                </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-checkstyle-plugin</artifactId>