Move vendor URL to "homepage" field

Author: ivankravets

platform.json

@@ -2,8 +2,7 @@
   "name": "nxplpc",
   "title": "NXP LPC",
   "description": "The NXP LPC is a family of 32-bit microcontroller integrated circuits by NXP Semiconductors. The LPC chips are grouped into related series that are based around the same 32-bit ARM processor core, such as the Cortex-M4F, Cortex-M3, Cortex-M0+, or Cortex-M0. Internally, each microcontroller consists of the processor core, static RAM memory, flash memory, debugging interface, and various peripherals.",
-  "url": "http://www.nxp.com/products/microcontrollers/",
-  "homepage": "http://platformio.org/platforms/nxplpc",
+  "homepage": "http://www.nxp.com/products/microcontrollers/",
   "license": "Apache-2.0",
   "engines": {
     "platformio": "<5"