LibWeb/CSS: Remove an ad-hoc simplification step in calc() parsing

Author: https://github.com/LucasChollet
Commit: 4bf197872b
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/3726
Reviewed-by: https://github.com/AtkinsSJ ✅

Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-serialization-002.txt

@@ -2,8 +2,7 @@ Harness status: OK
 
 Found 24 tests
 
-21 Pass
-3 Fail
+24 Pass
 Pass	testing calc(1vh + 2px + 3%)
 Pass	testing calc(4px + 1vh)
 Pass	testing calc(5px + 6em + 1vh)
@@ -19,12 +18,12 @@ Pass	testing calc(4vmin + 0pt)
 Pass	testing calc(100% - 100% + 1em)
 Pass	testing calc(100% + 1em - 100%)
 Pass	testing calc(1vh - 7px)
-Fail	testing calc(5ex - 9ex)
-Fail	testing calc(-80px + 25.4mm)
+Pass	testing calc(5ex - 9ex)
+Pass	testing calc(-80px + 25.4mm)
 Pass	testing calc(2 * (10px + 1rem))
 Pass	testing calc(2 * (10px - 1rem))
 Pass	testing calc((10px + 1rem) / 2)
 Pass	testing calc(2 * (min(10px, 20%) + max(1rem, 2%)))
 Pass	testing calc((min(10px, 20%) + max(1rem, 2%)) * 2)
 Pass	testing calc(1vmin - 14%)
-Fail	testing calc(4 * 3px + 4pc / 8)
+Pass	testing calc(4 * 3px + 4pc / 8)

Tests/LibWeb/Text/expected/wpt-import/css/css-values/calc-serialization.txt

@@ -2,5 +2,5 @@ Harness status: OK
 
 Found 1 tests
 
-1 Fail
-Fail	calc() serialization
+1 Pass
+Pass	calc() serialization