Remove duplicate package-info.java

/Users/zyang/apache/tez/tez-mapreduce/src/main/java/org/apache/tez/common/package-info.java:19: error: package org.apache.tez.common has already been annotated
@Private
^
java.lang.AssertionError
	at com.sun.tools.javac.util.Assert.error(Assert.java:126)
	at com.sun.tools.javac.util.Assert.check(Assert.java:45)
	at com.sun.tools.javac.code.SymbolMetadata.setDeclarationAttributesWithCompletion(SymbolMetadata.java:161)
	at com.sun.tools.javac.code.Symbol.setDeclarationAttributesWithCompletion(Symbol.java:215)
	at com.sun.tools.javac.comp.MemberEnter.actualEnterAnnotations(MemberEnter.java:952)
	at com.sun.tools.javac.comp.MemberEnter.access$600(MemberEnter.java:64)
	at com.sun.tools.javac.comp.MemberEnter$5.run(MemberEnter.java:876)
	at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:143)
	at com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:129)
	at com.sun.tools.javac.comp.Enter.complete(Enter.java:512)
	at com.sun.tools.javac.comp.Enter.main(Enter.java:471)
	at com.sun.tools.javadoc.JavadocEnter.main(JavadocEnter.java:78)
	at com.sun.tools.javadoc.JavadocTool.getRootDocImpl(JavadocTool.java:186)
	at com.sun.tools.javadoc.Start.parseAndExecute(Start.java:346)
	at com.sun.tools.javadoc.Start.begin(Start.java:219)
	at com.sun.tools.javadoc.Start.begin(Start.java:205)
	at com.sun.tools.javadoc.Main.execute(Main.java:64)
	at com.sun.tools.javadoc.Main.main(Main.java:54)
javadoc: error - fatal error