remove test case duplicated in S04-statement-modifiers/if.t
remove test case duplicated in S04-statement-modifiers/if.t

zostay/roast,bitrauser/roast,skids/roast,skids/roast,dogbert17/roast,skids/roast,niner/roast,b2gills/roast,laben/roast,laben/roast,zostay/roast,b2gills/roast,niner/roast,b2gills/roast,bitrauser/roast,niner/roast,perl6/roast,cygx/roast,dankogai/roast,dankogai/roast,dogbert17/roast,cygx/roast,dankogai/roast,zostay/roast,laben/roast,cygx/roast