remove unused variables. pep8 syntax fix

Author: p-slash

specsim/tests/test_camera.py

@@ -21,8 +21,9 @@ def test_resolution():
 
 
 def test_downsampling():
-    # Expected resolution matrix rows
     from scipy.special import erf
+
+    # Expected resolution matrix rows
     def expected_resolution_row(x, R, a):
         sqrt2 = np.sqrt(2)
 
@@ -35,8 +36,6 @@ def expected_resolution_row(x, R, a):
     i = specsim.instrument.initialize(c)
     camera = i.cameras[0]
 
-    n = len(camera._output_wavelength)
-    m = camera._downsampling
     rms_in = camera._rms_resolution[camera.ccd_slice.start]
     bin_width_out = camera.output_pixel_size.value