Remove defaults to allow insert/replace edits

Extension/package.json

@@ -5812,17 +5812,14 @@
         "configurationDefaults": {
             "[cpp]": {
                 "editor.wordBasedSuggestions": false,
-                "editor.suggest.insertMode": "replace",
                 "editor.semanticHighlighting.enabled": true
             },
             "[cuda-cpp]": {
                 "editor.wordBasedSuggestions": false,
-                "editor.suggest.insertMode": "replace",
                 "editor.semanticHighlighting.enabled": true
             },
             "[c]": {
                 "editor.wordBasedSuggestions": false,
-                "editor.suggest.insertMode": "replace",
                 "editor.semanticHighlighting.enabled": true
             }
         },