Unused "import".
diff --git a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/HedarFukushimaTransform.java b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/HedarFukushimaTransform.java
index d4967d57..d0a773f 100644
--- a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/HedarFukushimaTransform.java
+++ b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/HedarFukushimaTransform.java
@@ -28,7 +28,6 @@
 import org.apache.commons.rng.sampling.distribution.ContinuousUniformSampler;
 import org.apache.commons.math4.legacy.analysis.MultivariateFunction;
 import org.apache.commons.math4.legacy.optim.PointValuePair;
-import org.apache.commons.math4.legacy.optim.OptimizationData;
 
 /**
  * DSSA algorithm.
diff --git a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/MultiDirectionalTransform.java b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/MultiDirectionalTransform.java
index 5d59bae..e33f6ac 100644
--- a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/MultiDirectionalTransform.java
+++ b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/MultiDirectionalTransform.java
@@ -24,7 +24,6 @@
 
 import org.apache.commons.math4.legacy.analysis.MultivariateFunction;
 import org.apache.commons.math4.legacy.optim.PointValuePair;
-import org.apache.commons.math4.legacy.optim.OptimizationData;
 
 /**
  * Multi-directional search method.
diff --git a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/NelderMeadTransform.java b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/NelderMeadTransform.java
index 9751516..908ebf1 100644
--- a/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/NelderMeadTransform.java
+++ b/commons-math-legacy/src/main/java/org/apache/commons/math4/legacy/optim/nonlinear/scalar/noderiv/NelderMeadTransform.java
@@ -22,7 +22,6 @@
 
 import org.apache.commons.math4.legacy.analysis.MultivariateFunction;
 import org.apache.commons.math4.legacy.optim.PointValuePair;
-import org.apache.commons.math4.legacy.optim.OptimizationData;
 
 /**
  * <a href="https://en.wikipedia.org/wiki/Nelder%E2%80%93Mead_method">Nelder-Mead method</a>.