Revert "Fix Noto Color Emoji font fallback order for Unix"

This reverts commit 66288ab.

Note that putting "Noto Color Emoji" anywhere lower (even just below "DejaVu Sans")
creates issue described in pop-os#327

Putting it above "Noto Sans" breaks text rendering completely.

With the commit reverted I cannot reproduce the original issue
pop-os#68 the commit
66288ab was supposed to fix.

src/font/fallback/unix.rs

@@ -8,6 +8,8 @@ pub fn common_fallback() -> &'static [&'static str] {
     &[
         /* Sans-serif fallbacks */
         "Noto Sans",
+        /* Emoji fallbacks*/
+        "Noto Color Emoji",
         /* More sans-serif fallbacks */
         "DejaVu Sans",
         "FreeSans",
@@ -18,8 +20,6 @@ pub fn common_fallback() -> &'static [&'static str] {
         /* Symbols fallbacks */
         "Noto Sans Symbols",
         "Noto Sans Symbols2",
-        /* Emoji fallbacks*/
-        "Noto Color Emoji",
         //TODO: Add CJK script here for doublewides?
     ]
 }