[P120] Disable SPI init in library, small code optimization

lib/SparkFun_ADXL345_Arduino_Library/src/SparkFun_ADXL345.cpp

@@ -47,8 +47,9 @@ ADXL345::ADXL345(int CS) {
   gains[2] = 0.00349265;
   _CS      = CS;
   I2C      = false;
-  SPI.begin();
-  SPI.setDataMode(SPI_MODE3);
+  // tonhuisman: disabled as SPI is already initialized in ESPEasy core.
+  // SPI.begin();
+  // SPI.setDataMode(SPI_MODE3);
   pinMode(_CS, OUTPUT);
   digitalWrite(_CS, HIGH);
 }

src/_P120_ADXL345_Accelerometer.ino

@@ -133,9 +133,7 @@ boolean Plugin_120(uint8_t function, struct EventStruct *event, String& string)
       initPluginTaskData(event->TaskIndex, new (std::nothrow) P120_data_struct(static_cast<uint8_t>(P120_I2C_ADDR), P120_AVERAGE_BUFFER));
       P120_data_struct *P120_data = static_cast<P120_data_struct *>(getPluginTaskData(event->TaskIndex));
 
-      if (nullptr != P120_data) {
-        success = true;
-      }
+      success = nullptr != P120_data;
 
       break;
     }