README: Remove some old i2c related text

These sections are no longer relevant, remove.
Signed-off-by: NTom Rini <trini@konsulko.com>
Reviewed-by: NMinkyu Kang <mk7.kang@samsung.com>

README

@@ -1462,19 +1462,6 @@ The following options need to be configured:
 		with a list of GPIO LEDs that have inverted polarity.
 
 - I2C Support:
-		- drivers/i2c/ppc4xx_i2c.c
-		  - activate this driver with CONFIG_SYS_I2C_PPC4XX
-		  - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0
-		  - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1
-
-		- drivers/i2c/s3c24x0_i2c.c:
-		  - activate this driver with CONFIG_SYS_I2C_S3C24X0
-		  - This driver adds i2c buses (11 for Exynos5250, Exynos5420
-		    9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung)
-		    with a fix speed from 100000 and the slave addr 0!
-
-		additional defines:
-
 		CONFIG_SYS_NUM_I2C_BUSES
 		Hold the number of i2c buses you want to use.