Refine Common I/O API Guideline release note.

Author: mimaki

_posts/2023-09-19-microcontroller-peripheral-interface-guide.md

@@ -7,7 +7,7 @@ categories: releases
 
 # Common I/O API Guidelines for mruby and mruby/c
 
-Common I/O API Guidelines for [mruby](https://github.com/mruby/mruby) and [mruby/c](https://github.com/mrubyc/mrubyc) have been established and released.
+Common I/O API Guidelines for mruby and [mruby/c](https://github.com/mrubyc/mrubyc) have been established and released.
 
 We have established the Common I/O API Guidelines(hereinafter referred to as "Guidelines") for mruby and mruby/c. This initiative enhances the portability of programs across different microcontrollers (hereinafter referred to as "MCUs") and improves the reusability of various sensors and I/O control libraries. When utilizing mruby and mruby/c in the future, we sincerely hope that you will refer to these Guidelines.
 
@@ -16,29 +16,3 @@ Additionally, we would like to introduce libraries developed by enthusiastic con
 # mruby, mruby/c Common I/O API Guidelines
 
 https://github.com/mruby/microcontroller-peripheral-interface-guide
-
-# Community-developed Libraries
-
-## mruby
-
-### ESP32
-
-- [mruby-esp32](https://github.com/mruby-esp32/mruby-esp32)
-- [mruby-esp32-spi](https://github.com/mruby-esp32/mruby-esp32-spi) by [yuuu](https://github.com/yuuu)
-- [mruby-esp32-adc](https://github.com/mruby-esp32/mruby-esp32-adc) by [yuuu](https://github.com/yuuu)
-
----
-
-## mruby/c
-
-### RP2040
-
-- [mrubyc-rp2040-peripheral-demo](https://github.com/picoruby/rp2040-peripheral-demo) by [hasumikin](https://github.com/hasumikin)
-
-### PIC32
-
-- [mrubyc-pic32mx170](https://github.com/YoshihiroOgura/pic32mx170_mrubyc) by [YoshihiroOgura](https://github.com/YoshihiroOgura)
-
-### ESP32
-
-- [mrubyc-esp32](https://github.com/gfd-dennou-club/mrubyc-esp32) by [gfd-dennou-club](https://github.com/gfd-dennou-club) ([sugiymki](https://github.com/sugiymki))