Remove extra project key

Author: iluwatar

pom.xml

@@ -57,7 +57,6 @@
         <!-- SonarCloud -->
         <sonar.host.url>https://sonarcloud.io</sonar.host.url>
         <sonar.organization>iluwatar</sonar.organization>
-        <sonar.projectKey>iluwatar_java-design-patterns</sonar.projectKey>
         <sonar.projectName>Java Design Patterns</sonar.projectName>
     </properties>
     <modules>