Update .evergreen/tasks/unit-tests.js

Co-authored-by: Copilot <[email protected]>

Author: addaleax

.evergreen/tasks/unit-tests.js

@@ -44,7 +44,7 @@ for (let variant of UNIT_TESTS_BUILD_VARIANTS) {
   for (let unitTest of UNIT_TESTS.filter(
     (t) =>
       t.variants.includes(variant.platform) &&
-      (!t.unitTestsOnly || (t.unitTestsOnly && variant.runWithUnitTestsOnly)) &&
+      (!t.unitTestsOnly || variant.runWithUnitTestsOnly) &&
       !variant.disable
   )) {
     UNIT_TESTS_WITH_BUILD_VARIANTS.push([unitTest, variant]);