Fix typo in admin_performance.lua (#505)

Remove extra space in an unload checkbox message

Author: SpeedyFolf

[admin]/admin/client/gui/admin_performance.lua

@@ -25,7 +25,7 @@ function aPerformance ()
 		aPerformanceVehicle	= guiCreateCheckBox ( 0.05, 0.50, 0.90, 0.08, "Unload Vehicle Form when not used", false, true, aPerformanceForm )
 		aPerformanceBan	= guiCreateCheckBox ( 0.05, 0.58, 0.90, 0.08, "Unload Ban Form when not used", false, true, aPerformanceForm )
 					   guiCreateStaticImage ( 0.05, 0.68, 0.60, 0.003, "client\\images\\dot.png", true, aPerformanceForm )
-		aPerformanceInput	= guiCreateCheckBox ( 0.05, 0.70, 0.90, 0.08, "Unload Input Box  when not used", false, true, aPerformanceForm )
+		aPerformanceInput	= guiCreateCheckBox ( 0.05, 0.70, 0.90, 0.08, "Unload Input Box when not used", false, true, aPerformanceForm )
 		aPerformanceMessage	= guiCreateCheckBox ( 0.05, 0.78, 0.90, 0.08, "Unload Message Box when not used", false, true, aPerformanceForm )
 
 		aPerformanceOk	= guiCreateButton ( 0.79, 0.90, 0.18, 0.08, "Ok", true, aPerformanceForm )