diff --git a/src/tools/rustfmt/tests/source/cfg_if/detect/os/x86.rs b/src/tools/rustfmt/tests/source/cfg_if/detect/os/x86.rs
index 9257b8a4be636..b9adc67221aea 100644
--- a/src/tools/rustfmt/tests/source/cfg_if/detect/os/x86.rs
+++ b/src/tools/rustfmt/tests/source/cfg_if/detect/os/x86.rs
@@ -34,15 +34,6 @@ pub fn check_for(x: Feature) -> bool {
 fn detect_features() -> cache::Initializer {
     let mut value = cache::Initializer::default();
 
-    // If the x86 CPU does not support the CPUID instruction then it is too
-    // old to support any of the currently-detectable features.
-    if !has_cpuid() {
-        return value;
-    }
-
-    // Calling `__cpuid`/`__cpuid_count` from here on is safe because the CPU
-    // has `cpuid` support.
-
     // 0. EAX = 0: Basic Information:
     // - EAX returns the "Highest Function Parameter", that is, the maximum
     // leaf value for subsequent calls of `cpuinfo` in range [0,
diff --git a/src/tools/rustfmt/tests/target/cfg_if/detect/os/x86.rs b/src/tools/rustfmt/tests/target/cfg_if/detect/os/x86.rs
index 2e228aa374527..944b51615f8e5 100644
--- a/src/tools/rustfmt/tests/target/cfg_if/detect/os/x86.rs
+++ b/src/tools/rustfmt/tests/target/cfg_if/detect/os/x86.rs
@@ -34,15 +34,6 @@ pub fn check_for(x: Feature) -> bool {
 fn detect_features() -> cache::Initializer {
     let mut value = cache::Initializer::default();
 
-    // If the x86 CPU does not support the CPUID instruction then it is too
-    // old to support any of the currently-detectable features.
-    if !has_cpuid() {
-        return value;
-    }
-
-    // Calling `__cpuid`/`__cpuid_count` from here on is safe because the CPU
-    // has `cpuid` support.
-
     // 0. EAX = 0: Basic Information:
     // - EAX returns the "Highest Function Parameter", that is, the maximum
     // leaf value for subsequent calls of `cpuinfo` in range [0,