remove accidental commit

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1881583 13f79535-47bb-0310-9956-ffa450edef68

build.gradle

@@ -127,7 +127,7 @@ subprojects {
         exclude '**/BaseTestCellUtil.class'
         exclude '**/TestUnfixedBugs.class'
         exclude '**/TestOneFile.class'
-include '**/TestUnicodeString.class'
+
         // Exclude Test Suites
         exclude '**/All*Tests.class'
         exclude '**/HSSFTests.class'