Remove redundant definition of costant

Examples/FFT_02/FFT_02.ino

@@ -49,8 +49,6 @@ unsigned long time;
 #define SCL_TIME 0x01
 #define SCL_FREQUENCY 0x02
 
-#define Theta 6.2831 //2*Pi
-
 void setup()
 {
   Serial.begin(115200);
@@ -68,7 +66,7 @@ void loop()
     double cycles = (((samples-1) * frequency) / sampling);
     for (uint8_t i = 0; i < samples; i++)
     {
-      vReal[i] = uint8_t((amplitude * (sin((i * (Theta * cycles)) / samples))) / 2.0);
+      vReal[i] = uint8_t((amplitude * (sin((i * (twoPi * cycles)) / samples))) / 2.0);
       vImag[i] = 0; //Reset the imaginary values vector for each new frequency
     }
     /*Serial.println("Data:");