fix: remove minidump_stackwalk and minidump_dump from "bin"

this was preventing `npm install` from completing successfully, as those
files do not exist in the new prebuilt structure.

Author: nornagon

package.json

@@ -3,10 +3,6 @@
   "name": "minidump",
   "description": "Read and process minidump file",
   "version": "0.20.0",
-  "bin": {
-    "minidump_stackwalk": "build/src/processor/minidump_stackwalk",
-    "minidump_dump": "build/src/processor/minidump_dump"
-  },
   "types": "index.d.ts",
   "license": "MIT",
   "repository": {