Unused field.
diff --git a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizer.java b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizer.java
index ac367af..0e4aba5 100644
--- a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizer.java
+++ b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/SimplexOptimizer.java
@@ -104,8 +104,6 @@
  * @see HedarFukushimaTransform
  */
 public class SimplexOptimizer extends MultivariateOptimizer {
-    /** Final temperature for simulated annealing. */
-    private static final double SA_FINAL_TEMPERATURE = 1e-2;
     /** Simplex update function factory. */
     private Simplex.TransformFactory updateRule;
     /** Initial simplex. */