Revert "Add missing package-info files on sonar-server module"

This reverts commit 39cd87c4d76fa97282e43ac6548f2ca87e39ddfa.
Revert "Add package-info files on sonar-plugin-api-module"

This reverts commit da45cd0c58f17c6e57da0eb4f1318b827df90006.
Revert "Add package-info files on sonar-core-plugin module"

This reverts commit 5e8d5ce5de4cb4e92c6e0a7cd137a1164989fd74.
Revert "Add package-info files on sonar-batch module"

This reverts commit aae5b839d7dd34fca01312d0c22892f3f43a8054.