cleanup unnecessary code

Author: RobinMalfait

Diff for: packages/tailwindcss/src/index.ts

@@ -667,15 +667,13 @@ export async function compileAst(
       }
 
       let didChange = false
-      let emitNewCssVariables = false
 
       // Add all new candidates unless we know that they are invalid.
       let prevSize = allValidCandidates.size
       for (let candidate of newRawCandidates) {
         if (!designSystem.invalidCandidates.has(candidate)) {
           if (candidate[0] === '-' && candidate[1] === '-') {
-            emitNewCssVariables = designSystem.theme.markUsedVariable(candidate)
-            didChange ||= emitNewCssVariables
+            designSystem.theme.markUsedVariable(candidate)
           } else {
             allValidCandidates.add(candidate)
           }
@@ -697,7 +695,7 @@ export async function compileAst(
       // If no new ast nodes were generated, then we can return the original
       // CSS. This currently assumes that we only add new ast nodes and never
       // remove any.
-      if (previousAstNodeCount === newNodes.length && !emitNewCssVariables) {
+      if (previousAstNodeCount === newNodes.length) {
         compiled ??= optimizeAst(ast, designSystem)
         return compiled
       }

Diff for: packages/tailwindcss/src/theme.ts

@@ -185,11 +185,10 @@ export class Theme {
   markUsedVariable(themeKey: string) {
     let key = unescape(this.#unprefixKey(themeKey))
     let value = this.values.get(key)
-    if (!value) return false // Unknown variable
-    if (value.options & ThemeOptions.USED) return false // Variable already used
+    if (!value) return // Unknown variable
+    if (value.options & ThemeOptions.USED) return // Variable already used
 
     value.options |= ThemeOptions.USED
-    return true
   }
 
   resolve(candidateValue: string | null, themeKeys: ThemeKey[]): string | null {