Remove unused private class member

Signed-off-by: Chris Burel <burelc@amazon.com>

Code/Tools/TestImpactFramework/Runtime/Code/Source/TestEngine/TestImpactTestEngine.cpp

@@ -239,8 +239,7 @@ namespace TestImpact
         const RepoPath& testRunnerBinary,
         const RepoPath& instrumentBinary,
         size_t maxConcurrentRuns)
-        : m_maxConcurrentRuns(maxConcurrentRuns)
-        , m_testJobInfoGenerator(AZStd::make_unique<TestJobInfoGenerator>(
+        : m_testJobInfoGenerator(AZStd::make_unique<TestJobInfoGenerator>(
             sourceDir, targetBinaryDir, cacheDir, artifactDir, testRunnerBinary, instrumentBinary))
         , m_testEnumerator(AZStd::make_unique<TestEnumerator>(maxConcurrentRuns))
         , m_instrumentedTestRunner(AZStd::make_unique<InstrumentedTestRunner>(maxConcurrentRuns))

Code/Tools/TestImpactFramework/Runtime/Code/Source/TestEngine/TestImpactTestEngine.h

@@ -117,7 +117,6 @@ namespace TestImpact
         //! Cleans up the artifacts directory of any artifacts from previous runs.
         void DeleteArtifactXmls() const;
 
-        size_t m_maxConcurrentRuns = 0;
         AZStd::unique_ptr<TestJobInfoGenerator> m_testJobInfoGenerator;
         AZStd::unique_ptr<TestEnumerator> m_testEnumerator;
         AZStd::unique_ptr<InstrumentedTestRunner> m_instrumentedTestRunner;