CryptoPkg/BaseCryptLib: drop build flags specific to GCC44

We've removed BaseTools support for GCC44..GCC47. Drop
CryptoPkg/BaseCryptLib build flags that are specific to any of those gcc
versions.

No GCC44..GCC47 references remain under CryptoPkg after this patch.

Cc: Gang Wei <gang.wei@intel.com>
Cc: Jian Wang <jian.j.wang@intel.com>
Cc: Ting Ye <ting.ye@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1377
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

CryptoPkg/Library/BaseCryptLib/SmmCryptLib.inf

@@ -100,5 +100,4 @@
   #
   MSFT:*_*_*_CC_FLAGS = /wd4090
 
-  GCC:*_GCC44_IA32_CC_FLAGS = "-D__cdecl=__attribute__((cdecl))" "-D__declspec(t)=__attribute__((t))"
   XCODE:*_*_*_CC_FLAGS = -mmmx -msse