Nitrogen: Remove configs

They're so easy to set up and so finicky across devices that I'd rather set them manually

.config/nitrogen/bg-saved.cfg

@@ -1,9 +0,0 @@
-[xin_0]
-file=/home/salt/Pictures/Wallpapers/.active/1445624439541.png
-mode=0
-bgcolor=#282828
-
-[xin_1]
-file=/home/salt/Pictures/Wallpapers/Animu/Ghibli/klOItb2.png
-mode=0
-bgcolor=#282828

.config/nitrogen/nitrogen.cfg

@@ -1,12 +0,0 @@
-[geometry]
-posx=1928
-posy=8
-sizex=2540
-sizey=1382
-
-[nitrogen]
-view=icon
-recurse=true
-sort=alpha
-icon_caps=false
-dirs=/home/salt/Pictures/Wallpapers;