[clang-tidy] Remove unneeded casts

unsigned is (uint32_t) in both branches, so the cast can be removed.

See
https://clang.llvm.org/extra/clang-tidy/checks/google-readability-casting.html
and https://google.github.io/styleguide/cppguide.html#Casting.

Bug: v8:10488
Change-Id: I6d669e36509049fde449d8455c34d140f95b9b8b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2233989
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68303}

src/extensions/cputracemark-extension.cc

@@ -34,12 +34,12 @@ void CpuTraceMarkExtension::Mark(
 #if defined(__i386__) && defined(__pic__)
   __asm__ __volatile__("push %%ebx; cpuid; pop %%ebx"
                        : "=a"(magic_dummy)
-                       : "a"(0x4711 | ((unsigned)(param) << 16))
+                       : "a"(0x4711 | (param << 16))
                        : "ecx", "edx");
 #else
   __asm__ __volatile__("cpuid"
                        : "=a"(magic_dummy)
-                       : "a"(0x4711 | ((unsigned)(param) << 16))
+                       : "a"(0x4711 | (param << 16))
                        : "ecx", "edx", "ebx");
 #endif  // defined(__i386__) && defined(__pic__)