Remove unused variable

Author: ferenc-rad

tests/test_httomolibgpu.py

@@ -637,14 +637,13 @@ def __test_recon_LPRec3d_tomobar_memoryhook_common(slices, detX_size, projection
         estimated_memory_bytes -= input_slice_size
 
     estimated_memory_mb = round(slices * estimated_memory_bytes / (1024**2), 2)
-    max_mem_mb = round(max_mem / (1024**2), 2)
     max_mem -= subtract_bytes
     max_mem_mb = round(max_mem / (1024**2), 2)
 
     # now we compare both memory estimations
     difference_mb = abs(estimated_memory_mb - max_mem_mb)
     percents_relative_maxmem = round((difference_mb / max_mem_mb) * 100)
-    # the estimated_memory_mb should be LARGER or EQUAL to max_mem_mb
+    # the estimated_memory_mb should be LAt pRGER or EQUAL to max_mem_mb
     # the resulting percent value should not deviate from max_mem on more than 20%
     assert estimated_memory_mb >= max_mem_mb
     assert percents_relative_maxmem <= 30