Remove array version of src

Author: mradbourne

test/schemas/v0-0-1/tests.schema.json

@@ -172,14 +172,7 @@
     },
     "src": {
       "description": "The MF2 syntax source.",
-      "$comment": "Array values should be concatenated into a single string. They are only included to help readability in the test JSON.",
-      "type": [
-        "string",
-        "array"
-      ],
-      "items": {
-        "type": "string"
-      }
+      "type": "string"
     },
     "params": {
       "description": "Parameters to pass in to the formatter for resolving external variables.",
@@ -231,14 +224,7 @@
     },
     "expCleanSrc": {
       "description": "The expected normalized form of `src`, for testing stringifiers.",
-      "$comment": "Array values should be concatenated into a single string. They are only included to help readability in the test JSON.",
-      "type": [
-        "string",
-        "array"
-      ],
-      "items": {
-        "type": "string"
-      }
+      "type": "string"
     },
     "expParts": {
       "description": "The expected result of formatting the message to parts.",