remove visionOS from podspec

Author: swhitty

SwiftDraw.podspec.json

@@ -36,10 +36,6 @@
     "exclude_files": "SwiftDraw/Sources/NSImage+Image.swift",
     "frameworks": ["UIKit", "WatchKit", "Foundation"]
   },
-  "visionos": {
-    "exclude_files": "SwiftDraw/Sources/NSImage+Image.swift",
-    "frameworks": ["UIKit", "Foundation"]
-  },
   "swift_version": "6.0",
   "pod_target_xcconfig": {
     "OTHER_SWIFT_FLAGS": "-package-name SwiftDraw"