Merge pull request #5659 from per1234/remove-Grove-Serial-MP3-Player-V2.0

Remove "Grove Serial MP3 Player V2.0"

Author: MatteoPologruto

registry.txt

@@ -1613,7 +1613,6 @@ https://github.com/Seeed-Studio/Grove_LED_Bar.git|Contributed|Grove LED Bar
 https://github.com/Seeed-Studio/Grove_LED_Matrix_Driver.git|Contributed|Grove - LED Matrix Driver
 https://github.com/Seeed-Studio/Grove_LoRa_433MHz_and_915MHz_RF.git|Contributed|Grove - LoRa Radio 433MHz 868MHz
 https://github.com/Seeed-Studio/Grove_Mini_Track_Ball.git|Contributed|Grove Mini Track Ball
-https://github.com/Seeed-Studio/Grove_Serial_MP3_Player_V2.0.git|Contributed|Grove Serial MP3 Player V2.0
 https://github.com/Seeed-Studio/Grove_SHT31_Temp_Humi_Sensor.git|Contributed|Grove SHT31 Temp Humi Sensor
 https://github.com/Seeed-Studio/Grove_Sunlight_Sensor.git|Contributed|Grove - Sunlight Sensor
 https://github.com/Seeed-Studio/Grove_Temper_Humidity_TH02.git|Contributed|Grove Temper Humidity TH02