diff --git a/libraries/Wire/utility/i2c.c b/libraries/Wire/utility/i2c.c
deleted file mode 100644
index cc7fdcf2a..000000000
--- a/libraries/Wire/utility/i2c.c
+++ /dev/null
@@ -1,175 +0,0 @@
-#include <Arduino.h>
-#include "i2c.h"
-
-
-#include "ets_sys.h"
-#include "osapi.h"
-#include "gpio.h"
-
-size_t ets_printf(const char*, ...);
-#define DEBUGV ets_printf
-
-static uint8_t s_sda_pin = 0;
-static uint8_t s_scl_pin = 2;
-
-
-static inline void i2c_set(int sda, int scl)
-{
-	digitalWrite(s_sda_pin, sda);
-	digitalWrite(s_scl_pin, scl);
-}
-
-static inline void i2c_set_sda(int sda)
-{
-	digitalWrite(s_sda_pin, sda);
-}
-
-static inline void i2c_set_scl(int scl)
-{
-	digitalWrite(s_scl_pin, scl);
-}
-
-static inline uint8_t i2c_get_sda()
-{
-	return GPIO_INPUT_GET(GPIO_ID_PIN(s_sda_pin));
-}
-
-static inline void i2c_wait()
-{
-	delayMicroseconds(5);
-}
-
-void i2c_init(int sda_pin, int scl_pin)
-{
-	s_sda_pin = sda_pin;
-	s_scl_pin = scl_pin;
-	pinMode(sda_pin, OUTPUT_OPEN_DRAIN);
-	pinMode(scl_pin, OUTPUT_OPEN_DRAIN);
-	i2c_set(1, 1);
-	i2c_wait();
-}
-
-
-void i2c_release()
-{
-	pinMode(s_sda_pin, INPUT);
-	pinMode(s_scl_pin, INPUT);
-}
-
-void i2c_start()
-{
-	i2c_set(1, 1);
-	i2c_wait();
-	i2c_set_sda(0);
-	i2c_wait();
-	i2c_wait();
-	i2c_set_scl(0);
-	i2c_wait();
-}
-
-void i2c_stop()
-{
-	i2c_wait();
-    i2c_set_scl(1);
-    i2c_wait();
-    i2c_set_sda(1);
-    i2c_wait();
-}
-
-void i2c_set_ack(int ack)
-{
-    i2c_set_sda(!ack);
-    i2c_wait();
-    i2c_set_scl(1);
-    i2c_wait();
-    i2c_set_scl(0);
-    i2c_wait();
-    i2c_set_sda(0);
-    i2c_wait();
-}
-
-int i2c_get_ack()
-{
-	i2c_wait();
-	i2c_set_scl(1);
-	i2c_wait();
-	int result = i2c_get_sda();
-	i2c_set_scl(0);
-	i2c_wait();
-	i2c_set_sda(0);
-	i2c_wait();
-	return result;
-}
-
-uint8_t i2c_read(void)
-{
-	uint8_t result = 0;
-	for (int i = 7; i >= 0; --i)
-	{
-		i2c_wait();
-		i2c_set_scl(1);
-		i2c_wait();
-		result <<= 1;
-		result |= i2c_get_sda();
-		i2c_wait();				// <- remove
-		i2c_set_scl(0);
-		i2c_wait();
-	}
-}
-
-
-void i2c_write(uint8_t val)
-{
-	for (int i = 7; i >= 0; --i)
-	{
-		i2c_set_sda((val >> i) & 1);
-		i2c_wait();
-		i2c_set_scl(1);
-		i2c_wait();
-		i2c_set_scl(0);
-		i2c_wait();
-	}
-	i2c_set_sda(1);
-}
-
-size_t i2c_master_read_from(int address, uint8_t* data, size_t size, bool sendStop)
-{
-
-	DEBUGV("\r\nrf: %02x %08x %d\r\n", address, data, size);
-	i2c_start();
-	i2c_write(address << 1 | 1);
-	int ack = i2c_get_ack();
-	uint8_t* end = data + size;
-	for (;data != end; ++data )
-	{
-		*data = i2c_read();
-		DEBUGV("r%d ", *data);
-		if (data == end - 1)
-			i2c_set_ack(1);
-		else
-			i2c_set_ack(0);
-	}
-	DEBUGV("s\r\n", *data);
-	if (sendStop)
-		i2c_stop();
-	return size;
-}
-
-size_t i2c_master_write_to(int address, const uint8_t* data, size_t size, bool sendStop)
-{
-	i2c_start();
-	i2c_write(address << 1);
-	int ack = i2c_get_ack();
-	const uint8_t* end = data + size;
-	for (;data != end; ++data )
-	{
-		i2c_write(*data);
-		ack = i2c_get_ack();
-	}
-	if (sendStop)
-		i2c_stop();
-	return size;
-}
-
-
-