emitIAS for push -- simplify push since it's not used for args passing anymore

src/assembler_ia32.cpp

Index: src/assembler_ia32.cpp
diff --git a/src/assembler_ia32.cpp b/src/assembler_ia32.cpp
index a245ca99dcbe948e25e76fbad62a698a35665698..462ba634ab3c1e8f305fd04d2574d9c241fc42a0 100644
--- a/src/assembler_ia32.cpp
+++ b/src/assembler_ia32.cpp
@@ -99,18 +99,6 @@ void AssemblerX86::pushl(GPRRegister reg) {
   EmitUint8(0x50 + reg);
 }
 
-void AssemblerX86::pushl(const Address &address) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0xFF);
-  EmitOperand(6, address);
-}
-
-void AssemblerX86::pushl(const Immediate &imm) {
-  AssemblerBuffer::EnsureCapacity ensured(&buffer_);
-  EmitUint8(0x68);
-  EmitImmediate(BrokenType, imm);
-}
-
 void AssemblerX86::popl(GPRRegister reg) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0x58 + reg);