Remove unused variables

These were causing trouble with -Werror set

Author: keeeal

ArduCAM/ArduCAM.cpp

@@ -950,8 +950,6 @@ void ArduCAM::OV5642_set_RAW_size(uint8_t size)
 void ArduCAM::OV5642_set_JPEG_size(uint8_t size)
 {
 #if defined(OV5642_CAM) || defined(OV5642_CAM_BIT_ROTATION_FIXED)|| defined(OV5642_MINI_5MP) || defined (OV5642_MINI_5MP_PLUS)
-  uint8_t reg_val;
-
   switch (size)
   {
     case OV5642_320x240:
@@ -2945,7 +2943,7 @@ int ArduCAM::wrSensorRegs8_8(const struct sensor_reg reglist[])
 	#if defined (RASPBERRY_PI)
 		arducam_i2c_write_regs(reglist);
 	#else
-		int err = 0;
+		int err;
 	  uint16_t reg_addr = 0;
 	  uint16_t reg_val = 0;
 	  const struct sensor_reg *next = reglist;
@@ -2969,7 +2967,7 @@ int ArduCAM::wrSensorRegs8_16(const struct sensor_reg reglist[])
 	#if defined (RASPBERRY_PI)
 		arducam_i2c_write_regs16(reglist);
 	#else
-		int err = 0;
+		int err;
 	  unsigned int reg_addr, reg_val;
 	  const struct sensor_reg *next = reglist;
 
@@ -3000,7 +2998,7 @@ int ArduCAM::wrSensorRegs16_8(const struct sensor_reg reglist[])
 	#if defined (RASPBERRY_PI)
 		arducam_i2c_write_word_regs(reglist);
 	#else
-		int err = 0;
+		int err;
 	  unsigned int reg_addr;
 	  unsigned char reg_val;
 	  const struct sensor_reg *next = reglist;
@@ -3032,7 +3030,7 @@ int ArduCAM::wrSensorRegs16_16(const struct sensor_reg reglist[])
 {
 	#if defined (RASPBERRY_PI)
 	#else
-	  int err = 0;
+	  int err;
 	  unsigned int reg_addr, reg_val;
 	  const struct sensor_reg *next = reglist;
 	  reg_addr = pgm_read_word(&next->reg);