Remove unused private function in TestResult class

Author: Nekto89

src/test_lib_json/jsontest.cpp

@@ -140,16 +140,6 @@ TestResult& TestResult::popPredicateContext() {
 
 bool TestResult::failed() const { return !failures_.empty(); }
 
-unsigned int TestResult::getAssertionNestingLevel() const {
-  unsigned int level = 0;
-  const PredicateContext* lastNode = &rootPredicateNode_;
-  while (lastNode->next_ != 0) {
-    lastNode = lastNode->next_;
-    ++level;
-  }
-  return level;
-}
-
 void TestResult::printFailure(bool printTestName) const {
   if (failures_.empty()) {
     return;

src/test_lib_json/jsontest.h

@@ -97,7 +97,6 @@ class TestResult {
 
 private:
   TestResult& addToLastFailure(const JSONCPP_STRING& message);
-  unsigned int getAssertionNestingLevel() const;
   /// Adds a failure or a predicate context
   void addFailureInfo(const char* file,
                       unsigned int line,