Removed WIre.h import

This is already has been included in the LiquidCrystal_I2C.h file. This will make the loader to load the same file twice to the microController.
Will give bad practice to novice programmers. :)

examples/HelloWorld/HelloWorld.pde

@@ -1,7 +1,6 @@
 //YWROBOT
 //Compatible with the Arduino IDE 1.0
 //Library version:1.1
-#include <Wire.h> 
 #include <LiquidCrystal_I2C.h>
 
 LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display