chore: update package meta data

Signed-off-by: stdlib-bot <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/dstructs/struct/package.json

@@ -16,7 +16,6 @@
   "main": "./lib",
   "directories": {
     "benchmark": "./benchmark",
-    "doc": "./docs",
     "example": "./examples",
     "lib": "./lib",
     "test": "./test"

lib/node_modules/@stdlib/number/float64/base/ulp-difference/package.json

@@ -15,11 +15,8 @@
   ],
   "main": "./lib",
   "directories": {
-    "benchmark": "./benchmark",
-    "doc": "./docs",
     "example": "./examples",
-    "lib": "./lib",
-    "test": "./test"
+    "lib": "./lib"
   },
   "types": "./docs/types",
   "scripts": {},