[unittests] Remove superfluous semicolon, fixing warnings with GCC. NFC.

llvm-svn: 349453
diff --git a/clang/unittests/AST/ASTImporterTest.cpp b/clang/unittests/AST/ASTImporterTest.cpp
index aaadeb0..c6acf57 100644
--- a/clang/unittests/AST/ASTImporterTest.cpp
+++ b/clang/unittests/AST/ASTImporterTest.cpp
@@ -4467,7 +4467,7 @@
         return ND;
   }
   return nullptr;
-};
+}
 
 TEST_P(ASTImporterLookupTableTest,
     FriendWhichIsnotFoundByNormalLookupShouldBeFoundByImporterSpecificLookup) {