[TypeChecker] NFC: Remove a literal to make test-case less flaky

Multi-statement closure + simd perf test-case still (albeit very
rarely) fails, so let's remove `/ 4` in attempt to prevent that
happening.

Resolves: rdar://92025732
Resolves: rdar://93061835

(cherry picked from commit b8046e1)

Author: xedin

validation-test/Sema/type_checker_perf/fast/multi_statement_closure_with_simd_variable.swift

@@ -16,6 +16,6 @@ test {
 
   let width: Float = 2
 
-  let p = Int(max(20, min(1000, (simd_distance(a, b) + simd_distance(b, c) + simd_distance(c, d)) / width / 4)))
+  let p = Int(max(20, min(1000, (simd_distance(a, b) + simd_distance(b, c) + simd_distance(c, d)) / width)))
   print(p)
 }