Revert "added toInt() function to WString".

This reverts commit 448222e4b6.

SD examples/datalogger/datalogger.pde

@@ -1,81 +0,0 @@
-/*
-  SD card datalogger
- 
- This example shows how to log data from three analog sensors 
- to an SD card using the SD library.
- 	
- The circuit:
- * analog sensors on analog ins 0, 1, and 2
- * SD card attached to SPI bus as follows:
- ** MOSI - pin 11
- ** MISO - pin 12
- ** CLK - pin 13
- ** CS - pin 4
- 
- created  24 Nov 2010
- by Tom Igoe
- 
- This example code is in the public domain.
- 	 
- */
-
-#include <SD.h>
-
-// On the Ethernet Shield, CS is pin 4. Note that even if it's not
-// used as the CS pin, the hardware CS pin (10 on most Arduino boards,
-// 53 on the Mega) must be left as an output or the SD library
-// functions will not work.
-const int chipSelect = 4;
-
-void setup()
-{
-  Serial.begin(9600);
-  Serial.print("Initializing SD card...");
-  
-  // see if the card is present and can be initialized:
-  if (!SD.begin(chipSelect)) {
-    Serial.println("Card failed, or not present");
-    // don't do anything more:
-    return;
-  }
-  Serial.println("card initialized.");
-}
-
-void loop()
-{
-  // make a string for assembling the data to log:
-  String dataString = "";
-
-  // read three sensors and append to the string:
-  for (int analogPin = 0; analogPin < 3; analogPin++) {
-    int sensor = analogRead(analogPin);
-    dataString += String(sensor);
-    if (analogPin < 2) {
-      dataString += ","; 
-    }
-  }
-
-  // open the file:
-  File dataFile = SD.open("datalog.txt", true, true);
-
-  // if the file is available, write to it:
-  if (dataFile) {
-    dataFile.println(dataString);
-    dataFile.close();
-    // print to the serial port too:
-    Serial.println(dataString);
-  }  
-  // if the file isn't open, pop up an error:
-  else {
-    Serial.println("error opening datalog.txt");
-  } 
-}
-
-
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-