Remove Unused Variable

I removed an unused variable to address an LGTM recommendation (https://lgtm.com/projects/g/libretro/libretro-database/snapshot/8faf03bb3621f2c693208f2a4691f7af498f3b87/files/scripts/chtwrite.py?sort=name&dir=ASC&mode=heatmap#xbb66329666a7193b:1).

scripts/chtwrite.py

@@ -23,7 +23,6 @@ def cheatwriter( baseurl, chttype, outdir ):
 		codedesc = [x.encode('UTF8') for x in tree.xpath('//td[@class="codedesc"]/text()')]
 #This will create a list of codes and format them for the outfile
 		for td in tree.xpath('//tr/td[@class="code"][last()]'):
-			hacker = td.text
 			code.append('+'.join(
     	    text.replace('\n', '').replace(' ', '+') for text in td.getprevious().itertext()))