diff --git a/exercises/practice/etl/canonical-data.json b/exercises/practice/etl/canonical-data.json
deleted file mode 100644
index 2734af6..0000000
--- a/exercises/practice/etl/canonical-data.json
+++ /dev/null
@@ -1,105 +0,0 @@
-{
-  "exercise": "etl",
-  "comments": [
-    "Transforms a set of legacy Lexiconia data stored as letters per score",
-    "to a set of data stored score per letter.",
-    "Note:  The expected input data for these tests should have",
-    "integer keys (not stringified numbers as shown in the JSON below",
-    "Unless the language prohibits that, please implement these tests",
-    "such that keys are integers. e.g. in JavaScript, it might look ",
-    "like `transform( { 1: ['A'] } );`"
-  ],
-  "cases": [
-    {
-      "uuid": "78a7a9f9-4490-4a47-8ee9-5a38bb47d28f",
-      "description": "single letter",
-      "property": "transform",
-      "input": {
-        "legacy": {
-          "1": ["A"]
-        }
-      },
-      "expected": {
-        "a": 1
-      }
-    },
-    {
-      "uuid": "60dbd000-451d-44c7-bdbb-97c73ac1f497",
-      "description": "single score with multiple letters",
-      "property": "transform",
-      "input": {
-        "legacy": {
-          "1": ["A", "E", "I", "O", "U"]
-        }
-      },
-      "expected": {
-        "a": 1,
-        "e": 1,
-        "i": 1,
-        "o": 1,
-        "u": 1
-      }
-    },
-    {
-      "uuid": "f5c5de0c-301f-4fdd-a0e5-df97d4214f54",
-      "description": "multiple scores with multiple letters",
-      "property": "transform",
-      "input": {
-        "legacy": {
-          "1": ["A", "E"],
-          "2": ["D", "G"]
-        }
-      },
-      "expected": {
-        "a": 1,
-        "d": 2,
-        "e": 1,
-        "g": 2
-      }
-    },
-    {
-      "uuid": "5db8ea89-ecb4-4dcd-902f-2b418cc87b9d",
-      "description": "multiple scores with differing numbers of letters",
-      "property": "transform",
-      "input": {
-        "legacy": {
-          "1": ["A", "E", "I", "O", "U", "L", "N", "R", "S", "T"],
-          "2": ["D", "G"],
-          "3": ["B", "C", "M", "P"],
-          "4": ["F", "H", "V", "W", "Y"],
-          "5": ["K"],
-          "8": ["J", "X"],
-          "10": ["Q", "Z"]
-        }
-      },
-      "expected": {
-        "a": 1,
-        "b": 3,
-        "c": 3,
-        "d": 2,
-        "e": 1,
-        "f": 4,
-        "g": 2,
-        "h": 4,
-        "i": 1,
-        "j": 8,
-        "k": 5,
-        "l": 1,
-        "m": 3,
-        "n": 1,
-        "o": 1,
-        "p": 3,
-        "q": 10,
-        "r": 1,
-        "s": 1,
-        "t": 1,
-        "u": 1,
-        "v": 4,
-        "w": 4,
-        "x": 8,
-        "y": 4,
-        "z": 10
-      }
-    }
-  ]
-}
diff --git a/exercises/practice/rna-transcription/canonical-data.json b/exercises/practice/rna-transcription/canonical-data.json
deleted file mode 100644
index d05146e..0000000
--- a/exercises/practice/rna-transcription/canonical-data.json
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  "exercise": "rna-transcription",
-  "cases": [
-    {
-      "uuid": "b4631f82-c98c-4a2f-90b3-c5c2b6c6f661",
-      "description": "Empty RNA sequence",
-      "property": "toRna",
-      "input": {
-        "dna": ""
-      },
-      "expected": ""
-    },
-    {
-      "uuid": "a9558a3c-318c-4240-9256-5d5ed47005a6",
-      "description": "RNA complement of cytosine is guanine",
-      "property": "toRna",
-      "input": {
-        "dna": "C"
-      },
-      "expected": "G"
-    },
-    {
-      "uuid": "6eedbb5c-12cb-4c8b-9f51-f8320b4dc2e7",
-      "description": "RNA complement of guanine is cytosine",
-      "property": "toRna",
-      "input": {
-        "dna": "G"
-      },
-      "expected": "C"
-    },
-    {
-      "uuid": "870bd3ec-8487-471d-8d9a-a25046488d3e",
-      "description": "RNA complement of thymine is adenine",
-      "property": "toRna",
-      "input": {
-        "dna": "T"
-      },
-      "expected": "A"
-    },
-    {
-      "uuid": "aade8964-02e1-4073-872f-42d3ffd74c5f",
-      "description": "RNA complement of adenine is uracil",
-      "property": "toRna",
-      "input": {
-        "dna": "A"
-      },
-      "expected": "U"
-    },
-    {
-      "uuid": "79ed2757-f018-4f47-a1d7-34a559392dbf",
-      "description": "RNA complement",
-      "property": "toRna",
-      "input": {
-        "dna": "ACGTGGTCTTAA"
-      },
-      "expected": "UGCACCAGAAUU"
-    }
-  ]
-}