diff --git a/test/porousmediumflow/1p2c/implicit/grids/test_1p2c.dgf b/test/porousmediumflow/1p2c/implicit/grids/test_1p2c.dgf
deleted file mode 100644
index 1a778b54731e752daaa548146de975eb1216b20e..0000000000000000000000000000000000000000
--- a/test/porousmediumflow/1p2c/implicit/grids/test_1p2c.dgf
+++ /dev/null
@@ -1,11 +0,0 @@
-DGF
-Interval
-0 0   % first corner 
-1 1   % second corner
-20 2  % number of cells in x and y direction
-# 
-
-BOUNDARYDOMAIN
-default 1    % all boundaries have id 1
-#BOUNDARYDOMAIN
-# unitcube.dgf 
diff --git a/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconduction.dgf b/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconduction.dgf
deleted file mode 100644
index c3b8edac50dbe7e12bb1d10ec7f368a8b45e1966..0000000000000000000000000000000000000000
--- a/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconduction.dgf
+++ /dev/null
@@ -1,11 +0,0 @@
-DGF
-Interval
-0 0   % first corner 
-5 1   % second corner
-200 1  % number of cells in x and y direction
-# 
-
-BOUNDARYDOMAIN
-default 1    % all boundaries have id 1
-#BOUNDARYDOMAIN
-# unitcube.dgf 
diff --git a/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconvection.dgf b/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconvection.dgf
deleted file mode 100644
index 83adf4b1bfef3e63d58d08dbad7ba314b94ac2ab..0000000000000000000000000000000000000000
--- a/test/porousmediumflow/1p2c/implicit/grids/test_1p2cniconvection.dgf
+++ /dev/null
@@ -1,11 +0,0 @@
-DGF
-Interval
-0 0   % first corner 
-20 1   % second corner
-80 1  % number of cells in x and y direction
-# 
-
-BOUNDARYDOMAIN
-default 1    % all boundaries have id 1
-#BOUNDARYDOMAIN
-# unitcube.dgf