UefiCpuPkg/Application/Cpuid: Remove unnecessary code check
UefiCpuPkg/Application/Cpuid: Remove unnecessary code check

gMaximumBasicFunction is set to CPUID_SIGNATURE as below, so removed the compare
code.
UINT32  gMaximumBasicFunction = CPUID_SIGNATURE;

Cc: Qiu Shumin <a85ffd5e6451a83645d9ceae55f1cb6cdf90c130@intel.com>
Cc: Michael Kinney <fd20bc543a9f65bb633fac7d08a403c1f1c8eb6c@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <7d6fed0251a47076d6e691789131f22f07d057b4@intel.com>
Reviewed-by: Qiu Shumin <a85ffd5e6451a83645d9ceae55f1cb6cdf90c130@intel.com>
Reviewed-by: Michael Kinney <fd20bc543a9f65bb633fac7d08a403c1f1c8eb6c@intel.com>

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