Fix requirements, hope this is correct.

Author: sverrham

custom_components/airthings_wave/manifest.json

@@ -7,6 +7,6 @@
   "dependencies": [],
   "codeowners": ["@MartyTremblay"],
   "requirements": [
-    "requirements": ["bluepy==1.3.0"]
+    "bluepy==1.3.0"
   ]
 }