Remove underline from function syntax highlighting

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

zed/assets/themes/black.toml

@@ -34,11 +34,11 @@ hover = "#00000033"
 
 [syntax]
 keyword = { color = "#0086c0", weight = "bold" }
-function = { color = "#dcdcaa", underline = true }
+function = "#dcdcaa"
 string = "#cb8f77"
 type = "#4ec9b0"
 number = "#b5cea8"
 comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
-constant = "#9cdcfe"
+constant = "#9cdcfe"

zed/assets/themes/dark.toml

@@ -34,11 +34,11 @@ hover = "#00000033"
 
 [syntax]
 keyword = { color = "#0086c0", weight = "bold" }
-function = { color = "#dcdcaa", underline = true }
+function = "#dcdcaa"
 string = "#cb8f77"
 type = "#4ec9b0"
 number = "#b5cea8"
 comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
-constant = "#9cdcfe"
+constant = "#9cdcfe"

zed/assets/themes/light.toml

@@ -34,11 +34,11 @@ hover = "#0000000D"
 
 [syntax]
 keyword = { color = "#0000fa", weight = "bold" }
-function = { color = "#795e26", underline = true }
+function = "#795e26"
 string = "#a82121"
 type = "#267f29"
 number = "#b5cea8"
 comment = "#6a9955"
 property = "#4e94ce"
 variant = "#4fc1ff"
-constant = "#9cdcfe"
+constant = "#9cdcfe"