update tomorrow night theme name

lua/themes/tomorrow-night.lua

@@ -1,33 +0,0 @@
-local colors = {
-    white = "#C5C8C2",
-    darker_black = "#191b1d",
-    black = "#1d1f21", -- nvim bg
-    black2 = "#232527",
-    one_bg = "#363a41",
-    one_bg2 = "#353b45",
-    one_bg3 = "#30343c",
-    grey = "#434547",
-    grey_fg = "#545B68",
-    grey_fg2 = "#616875",
-    light_grey = "#676e7b",
-    red = "#cc6666",
-    baby_pink = "#FF6E79",
-    pink = "#ff9ca3",
-    line = "#27292b", -- for lines like vertsplit
-    green = "#a4b595",
-    vibrant_green = "#a3b991",
-    nord_blue = "#728da8",
-    blue = "#6f8dab",
-    yellow = "#d7bd8d",
-    sun = "#e4c180",
-    purple = "#b4bbc8",
-    dark_purple = "#b290ac",
-    teal = "#8abdb6",
-    orange = "#DE935F",
-    cyan = "#70c0b1",
-    statusline_bg = "#212326",
-    lightbg = "#373B41",
-    lightbg2 = "#2D3035"
-}
-
-return colors