Don't bump platforms

Author: ktoso

Package.swift

@@ -4,13 +4,6 @@ import PackageDescription
 
 let package = Package(
     name: "swift-distributed-tracing",
-    platforms: [
-        .macOS(.v10_15),
-        .iOS(.v13),
-        .tvOS(.v13),
-        .watchOS(.v6),
-        .macCatalyst(.v13),
-    ],
     products: [
         .library(name: "Instrumentation", targets: ["Instrumentation"]),
         .library(name: "Tracing", targets: ["Tracing"]),