Remove example pico_i2c_pio

This example should be moved to the i2c-pio crate:
https://github.com/ithinuel/i2c-pio-rs/pull/6

Author: jannic

boards/arduino_nano_connect/Cargo.toml

@@ -41,7 +41,6 @@ panic-halt= "0.2.0"
 embedded-hal ="0.2.5"
 cortex-m-rtic = "0.6.0-alpha.5"
 nb = "1.0"
-# i2c-pio = { git = "https://github.com/ithinuel/i2c-pio-rs", rev = "afc2dad0e955da2b712d7f7cd78c7af88ddc6a45" }
 
 [features]
 default = ["boot2", "rt"]

boards/rp-pico/Cargo.toml

@@ -26,7 +26,6 @@ panic-halt= "0.2.0"
 embedded-hal ="0.2.5"
 cortex-m-rtic = "0.6.0-rc.4"
 nb = "1.0"
-i2c-pio = { git = "https://github.com/ithinuel/i2c-pio-rs", rev = "fa155bbae4e8553b448a66cc47236db38b7524dd" }
 heapless = "0.7.9"
 embedded-sdmmc = { git = "https://github.com/rust-embedded-community/embedded-sdmmc-rs.git" }
 smart-leds = "0.3.0"