Update examples to rescript 9.1.1.

Author: cristianoc

examples/deadcode/package-lock.json

@@ -12,7 +12,7 @@
     "analyze": "npm run dce && npm run exception && npm run noalloc"
   },
   "devDependencies": {
-    "bs-platform": "8.4.2",
+    "rescript": "9.1.1",
     "@glennsl/bs-json": "^3.0.0",
     "gentype": "^3.27.0",
     "react": "^16.13.1",

examples/deadcode/package.json

@@ -3,17 +3,7 @@
 
 
 // tslint:disable-next-line:interface-over-type-literal
-export type someMutableFields = {
-  mutable0: string; 
-  readonly immutable: number; 
-  mutable1: string; 
-  mutable2: string
-};
+export type someMutableFields = unknown;
 
 // tslint:disable-next-line:interface-over-type-literal
-export type someMethods = {
-  readonly send: (_1:string) => void; 
-  readonly on: (_1:string, _2:((_1:number) => void)) => void; 
-  readonly threeargs: (_1:number, _2:string, _3:number) => string; 
-  readonly twoArgs: (_1:number, _2:string) => number
-};
+export type someMethods = unknown;

examples/deadcode/src/BucklescriptAnnotations.bs.js

@@ -20,7 +20,7 @@ type someMethods = {
   "twoArgs": (. int, string) => int,
 }
 
-let foo = (x: someMethods) => x["threeargs"](3, "a", 4)
+// let foo = (x: someMethods) => x["threeargs"](3, "a", 4)
 
 let bar = (x: someMethods) => {
   let f = x["twoArgs"]