Fixed some variables

Author: makermelissa

examples/ssd1325_gamma.py

@@ -1,6 +1,5 @@
 import time
 import board
-import busio
 import displayio
 import adafruit_ssd1325
 
@@ -10,9 +9,9 @@
 spi = board.SPI()
 oled_cs = board.D5
 oled_dc = board.D6
-tft_reset = board.D9
+oled_reset = board.D9
 
-display_bus = displayio.FourWire(spi, command=tft_dc, chip_select=tft_cs, reset=tft_reset,
+display_bus = displayio.FourWire(spi, command=oled_dc, chip_select=oled_cs, reset=oled_reset,
                                  baudrate=1000000)
 time.sleep(1)
 display = adafruit_ssd1325.SSD1325(display_bus, width=128, height=64)