diff --git a/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java b/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java
index 9f7fb02723a..dd84da5b7d8 100644
--- a/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java
+++ b/src/main/java/org/apache/sysds/runtime/matrix/data/LibMatrixFourier.java
@@ -21,11 +21,6 @@
 
 import org.apache.commons.math3.util.FastMath;
 
-import org.apache.sysds.runtime.util.CommonThreadPool;
-
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.TimeUnit;
-
 public class LibMatrixFourier {
 
 	/**
@@ -180,7 +175,6 @@ private static void ifft_one_dim(double[] re, double[] im, double[] re_inter, do
 		}
 
 		// apply fft
-		//fft_one_dim_recursive(re, im, re_inter, im_inter, start, step, num, subArraySize);
 		fft_one_dim(re, im, re_inter, im_inter, start, stop, num, minStep);
 
 		// conjugate and scale result
@@ -225,17 +219,4 @@ public static MatrixBlock[] ifft(MatrixBlock re){
 		return ifft(re, new MatrixBlock(re.getNumRows(),re.getNumColumns(), new double[re.getNumRows()*re.getNumColumns()]));
 	}
 
-	public static void awaitParallelExecution(ExecutorService pool) {
-
-		try {
-			int timeout = 100;
-			if(!pool.awaitTermination(timeout, TimeUnit.SECONDS)) {
-				pool.shutdownNow();
-			}
-		}
-		catch(InterruptedException e) {
-			e.printStackTrace();
-		}
-	}
-
 }