Revert packaging changes

Author: siddhijain

pom.xml

@@ -4,6 +4,7 @@
 	<groupId>com.microsoft.azure</groupId>
 	<artifactId>microsoft-authentication-library-for-java</artifactId>
 	<version>1.0.0</version>
+	<packaging>pom</packaging>
 	<modules>
         <module>msal4j-brokers</module>
         <module>msal4j-sdk</module>