cmd/compile: keep internal/runtime packages sorted

This is a minor cleanup from CL 600436.

For #65355.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-darwin-amd64-longtest
Change-Id: I8e27f0c6ba6bd35f4aa2b9d53c394fb5f1eb433d
Reviewed-on: https://go-review.googlesource.com/c/go/+/595116
Reviewed-by: Austin Clements <[email protected]>
Auto-Submit: Michael Pratt <[email protected]>
Reviewed-by: Cherry Mui <[email protected]>
LUCI-TryBot-Result: Go LUCI <[email protected]>

Author: prattmic

src/cmd/compile/internal/test/inl_test.go

@@ -97,10 +97,6 @@ func TestIntendedInlining(t *testing.T) {
 			"traceLocker.ok",
 			"traceEnabled",
 		},
-		"internal/runtime/sys": {},
-		"internal/runtime/math": {
-			"MulUintptr",
-		},
 		"bytes": {
 			"(*Buffer).Bytes",
 			"(*Buffer).Cap",
@@ -117,6 +113,10 @@ func TestIntendedInlining(t *testing.T) {
 		"internal/abi": {
 			"UseInterfaceSwitchCache",
 		},
+		"internal/runtime/math": {
+			"MulUintptr",
+		},
+		"internal/runtime/sys": {},
 		"compress/flate": {
 			"byLiteral.Len",
 			"byLiteral.Less",