treewide: Remove unused variables

Change-Id: I946716e87ff95c3775d2802b83de565b6b2ac0a3
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/test/utils_unittest.cpp b/test/utils_unittest.cpp
index cba8ee2..9c01aef 100644
--- a/test/utils_unittest.cpp
+++ b/test/utils_unittest.cpp
@@ -23,8 +23,7 @@
 
 std::vector<std::string> returnList;
 
-std::vector<std::string> getLibraryList(const std::string& path,
-                                        PathMatcher check)
+std::vector<std::string> getLibraryList(const std::string&, PathMatcher)
 {
     return returnList;
 }