[TEST] Need to remove few invalid test files from repo

As a part of fix # 7162377, we've to remove few test files from the repo.


test/java/io/deserializable/6559775/Test6559775.sh
test/java/plugin/iexplorer/4777008/README
test/javax/swing/JFileChooser/6449933/Test6449933.java
test/com/sun/corba/connection/6354718/Hello.idl
test/com/sun/corba/connection/6354718/HelloClient.java
test/com/sun/corba/connection/6354718/HelloServer.java
test/com/sun/corba/connection/6354718/Test6354718.sh
test/java/plugin/misc/4989229/README
test/java/plugin/misc/4989229/Test4989229.java
test/java/plugin/misc/4989229/index.html
test/java/plugin/misc/4989229/test2.class
test/java/plugin/misc/4989229/test2.jar
test/java/plugin/misc/4989229/test2.java
test/java/plugin/misc/4989229/test2.jnlp
test/java/plugin/misc/4989229/test2_applet.class
test/java/plugin/misc/4989229/test2_applet.html
test/java/plugin/misc/4989229/test2_applet.jar
test/java/plugin/misc/4989229/test2_applet.java
test/java/plugin/misc/4989229/trusted.jssecerts.allthree
test/java/plugin/misc/4989229/trusted.jssecerts.nicole
test/java/plugin/misc/4989229/trusted.jssecerts.usna1
test/java/plugin/misc/4989229/trusted.jssecerts.verisign
test/java/plugin/misc/6656520/README
test/java/plugin/misc/6656520/Test6656520.java
test/sun/java2d/font/4744948/README
test/sun/java2d/font/4744948/README.TXT
test/sun/java2d/font/4744948/Test.jad
test/sun/java2d/font/4744948/Test4744948.java
test/sun/java2d/font/4744948/Test4744948.sh
test/sun/java2d/font/4744948/testcase.jar