Removed unused test target files & Code cleanup

Package.swift

@@ -5,19 +5,15 @@ import PackageDescription
 
 let package = Package(
     name: "MaterialUIKit",
+    platforms: [.iOS(.v15)],
     products: [
-        // Products define the executables and libraries a package produces, making them visible to other packages.
         .library(
             name: "MaterialUIKit",
             targets: ["MaterialUIKit"]),
+
     ],
     targets: [
-        // Targets are the basic building blocks of a package, defining a module or a test suite.
-        // Targets can depend on other targets in this package and products from dependencies.
         .target(
-            name: "MaterialUIKit"),
-        .testTarget(
-            name: "MaterialUIKitTests",
-            dependencies: ["MaterialUIKit"]),
+            name: "MaterialUIKit")
     ]
 )