fix: FormData is not available and therefore not viable condition with {N} 6.2

Author: NathanWalker

src/http/http.android.ts

@@ -121,8 +121,6 @@ export class Http {
                 types.isString(options.content)
             ) {
                 javaOptions.content = new java.lang.String(options.content);
-            } else if (options.content instanceof FormData) {
-                javaOptions.content = new java.lang.String(options.content.toString());
             } else if (types.isObject(options.content)) {
                 javaOptions.content = serialize(options.content);
             }

src/http/http.ios.ts

@@ -740,8 +740,7 @@ export class Http {
           }
 
           if (
-            types.isString(options.content) ||
-            options.content instanceof FormData
+            types.isString(options.content)
           ) {
             urlRequest.HTTPBody = NSString.stringWithString(
               options.content.toString()