diff --git a/tests/resources/importedModelWithCustomUnits1.cellml b/tests/resources/importedModelWithCustomUnits1.cellml
deleted file mode 100644
index 705ca2e69..000000000
--- a/tests/resources/importedModelWithCustomUnits1.cellml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model xmlns="http://www.cellml.org/cellml/2.0#" name="import_me">
-  <units name="myUnits">
-    <unit units="second" prefix="milli" />
-  </units>
-  <component name="importMe">
-    <variable name="x" units="myUnits" interface="public_and_private"/>
-  </component>
-</model>
diff --git a/tests/resources/importedModelWithCustomUnits2.cellml b/tests/resources/importedModelWithCustomUnits2.cellml
deleted file mode 100644
index 18d43564a..000000000
--- a/tests/resources/importedModelWithCustomUnits2.cellml
+++ /dev/null
@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<model xmlns="http://www.cellml.org/cellml/2.0#" name="import_me">
-  <units name="myUnits2">
-    <unit units="metre" prefix="milli" />
-  </units>
-  <component name="importMe">
-    <variable name="x" units="myUnits2" interface="public_and_private"/>
-  </component>
-</model>