test: update test case

Author: edison1105

packages/compiler-sfc/__tests__/__snapshots__/cssVars.spec.ts.snap

@@ -74,8 +74,6 @@ export default {
   expose();
 
 _useCssVars(_ctx => ({
-  \\"xxxxxxxx-a\\": (_unref(a)),
-  \\"xxxxxxxx-b\\": (_unref(b)),
   \\"xxxxxxxx-foo\\": (_unref(foo)),
   \\"xxxxxxxx-_a___b____2____px__\\": ((_unref(a) + _unref(b)) / 2 + 'px' ),
   \\"xxxxxxxx-__a___b______2___a_\\": (((_unref(a) + _unref(b))) / (2 * _unref(a)))

packages/compiler-sfc/__tests__/cssVars.spec.ts

@@ -207,10 +207,6 @@ describe('CSS vars injection', () => {
         let foo = 300
         </script>\n` +
           `<style>
-          span{
-            width: calc(v-bind(a) - 3px);
-            height: calc(v-bind('b') - 3px);
-          }
           p{
             width: calc(v-bind(foo) - 3px);
             height: calc(v-bind('foo') - 3px);
@@ -227,8 +223,6 @@ describe('CSS vars injection', () => {
         </style>`
       )
       expect(content).toMatch(`_useCssVars(_ctx => ({
-  "${mockId}-a": (_unref(a)),
-  "${mockId}-b": (_unref(b)),
   "${mockId}-foo": (_unref(foo)),
   "${mockId}-_a___b____2____px__": ((_unref(a) + _unref(b)) / 2 + 'px' ),
   "${mockId}-__a___b______2___a_": (((_unref(a) + _unref(b))) / (2 * _unref(a)))