diff --git a/.percy.yml b/.percy.yml
deleted file mode 100644
index f56df3d5e..000000000
--- a/.percy.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-version: 2
-snapshot:
-  widths:
-    - 1280
-discovery:
-  disable-cache: true
diff --git a/.tern-project b/.tern-project
deleted file mode 100644
index 1209b33da..000000000
--- a/.tern-project
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-  "ecmaVersion": 6,
-  "libs": ["browser"],
-  "loadEagerly": [],
-  "dontLoad": ["node_modules/**"],
-  "plugins": {
-    "modules": {},
-    "es_modules": {},
-    "node": {},
-    "doc_comment": {
-      "fullDocs": true,
-      "strong": true
-    }
-  }
-}