diff --git a/test-data/ert/poly_design/.ert_runpath_list b/test-data/ert/poly_design/.ert_runpath_list
deleted file mode 100644
index 0e20a7e9aa6..00000000000
--- a/test-data/ert/poly_design/.ert_runpath_list
+++ /dev/null
@@ -1,10 +0,0 @@
-000  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-0/iter-0  poly.ert-0  000
-001  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-1/iter-0  poly.ert-1  000
-002  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-2/iter-0  poly.ert-2  000
-003  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-3/iter-0  poly.ert-3  000
-004  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-4/iter-0  poly.ert-4  000
-005  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-5/iter-0  poly.ert-5  000
-006  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-6/iter-0  poly.ert-6  000
-007  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-7/iter-0  poly.ert-7  000
-008  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-8/iter-0  poly.ert-8  000
-009  /data/workspace/ert/test-data/ert/poly_design/poly_out/realization-9/iter-0  poly.ert-9  000
diff --git a/test-data/ert/poly_design/POLY_EVAL b/test-data/ert/poly_design/POLY_EVAL
deleted file mode 100644
index 8c0137b18c5..00000000000
--- a/test-data/ert/poly_design/POLY_EVAL
+++ /dev/null
@@ -1 +0,0 @@
-EXECUTABLE poly_eval.py
diff --git a/test-data/ert/poly_design/coeff_priors b/test-data/ert/poly_design/coeff_priors
deleted file mode 100644
index 32eac89cf81..00000000000
--- a/test-data/ert/poly_design/coeff_priors
+++ /dev/null
@@ -1,3 +0,0 @@
-a UNIFORM 0 1
-b UNIFORM 0 2
-c UNIFORM 0 5
diff --git a/test-data/ert/poly_design/observations b/test-data/ert/poly_design/observations
deleted file mode 100644
index 942197b60c4..00000000000
--- a/test-data/ert/poly_design/observations
+++ /dev/null
@@ -1,5 +0,0 @@
-GENERAL_OBSERVATION POLY_OBS {
-   DATA       = POLY_RES;
-   INDEX_LIST = 0,2,4,6,8;
-   OBS_FILE   = poly_obs_data.txt;
-};
diff --git a/test-data/ert/poly_design/poly.ert b/test-data/ert/poly_design/poly.ert
deleted file mode 100644
index 467add55731..00000000000
--- a/test-data/ert/poly_design/poly.ert
+++ /dev/null
@@ -1,10 +0,0 @@
-QUEUE_OPTION LOCAL MAX_RUNNING 10
-RUNPATH poly_out/realization-<IENS>/iter-<ITER>
-OBS_CONFIG observations
-NUM_REALIZATIONS 10
-MIN_REALIZATIONS 1
-GEN_DATA POLY_RES RESULT_FILE:poly.out
-DESIGN_MATRIX poly_design.xlsx DESIGN_SHEET:DesignSheet01 DEFAULT_SHEET:DefaultSheet
-GEN_KW COEFFS coeff_priors
-INSTALL_JOB poly_eval POLY_EVAL
-FORWARD_MODEL poly_eval
diff --git a/test-data/ert/poly_design/poly_design.xlsx b/test-data/ert/poly_design/poly_design.xlsx
deleted file mode 100644
index 3f94bdbe72f..00000000000
Binary files a/test-data/ert/poly_design/poly_design.xlsx and /dev/null differ
diff --git a/test-data/ert/poly_design/poly_eval.py b/test-data/ert/poly_design/poly_eval.py
deleted file mode 100755
index 200f4bcd99f..00000000000
--- a/test-data/ert/poly_design/poly_eval.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env python
-import json
-
-
-def _load_coeffs(filename):
-    with open(filename, encoding="utf-8") as f:
-        return json.load(f)["COEFFS"]
-
-
-def _evaluate(coeffs, x):
-    return coeffs["a"] * x**2 + coeffs["b"] * x + coeffs["c"]
-
-
-if __name__ == "__main__":
-    coeffs = _load_coeffs("parameters.json")
-    output = [_evaluate(coeffs, x) for x in range(10)]
-    with open("poly.out", "w", encoding="utf-8") as f:
-        f.write("\n".join(map(str, output)))
diff --git a/test-data/ert/poly_design/poly_obs_data.txt b/test-data/ert/poly_design/poly_obs_data.txt
deleted file mode 100644
index 930111cada1..00000000000
--- a/test-data/ert/poly_design/poly_obs_data.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-2.1457049781272213 0.6
-8.769219841380755 1.4
-12.388014786122742 3.0
-25.600464531354252 5.4
-42.35204755970952 8.6