remove Span<UInt8> inits

Author: t089

Sources/JSONParsing/JSON.Object (ext).swift

@@ -9,14 +9,6 @@ extension JSON.Object {
     public init(parsing json: JSON) throws {
         self.init(try JSON.NodeRule<Int>.Object.parse(json.utf8))
     }
-    /// Attempts to parse a JSON object from a span.
-    public init(parsing span: Span<UInt8>) throws {
-        self.init(
-            try span.withUnsafeBufferPointer { buffer in
-                try JSON.NodeRule<Int>.Object.parse(buffer)
-            }
-        )
-    }
     /// Attempts to parse a JSON object from a raw span.
     public init(parsing span: RawSpan) throws {
         self.init(