[arm] Remove dead CallDeoptmizer methods.

Bug: 
Change-Id: Ibd094c5f0fddba4932d3b87f4c27d6af4636217b
Reviewed-on: https://chromium-review.googlesource.com/847374Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Pierre Langlois <pierre.langlois@arm.com>
Cr-Commit-Position: refs/heads/master@{#50329}

src/arm/macro-assembler-arm.cc

@@ -224,44 +224,6 @@ void TurboAssembler::Call(Handle<Code> code, RelocInfo::Mode rmode,
   Call(code.address(), rmode, cond, mode);
 }
 
-void MacroAssembler::CallDeoptimizer(Address target) {
-  BlockConstPoolScope block_const_pool(this);
-
-  uintptr_t target_raw = reinterpret_cast<uintptr_t>(target);
-
-  // Use ip directly instead of using UseScratchRegisterScope, as we do not
-  // preserve scratch registers across calls.
-
-  // We use blx, like a call, but it does not return here. The link register is
-  // used by the deoptimizer to work out what called it.
-  if (CpuFeatures::IsSupported(ARMv7)) {
-    CpuFeatureScope scope(this, ARMv7);
-    movw(ip, target_raw & 0xFFFF);
-    movt(ip, (target_raw >> 16) & 0xFFFF);
-    blx(ip);
-  } else {
-    // We need to load a literal, but we can't use the usual constant pool
-    // because we call this from a patcher, and cannot afford the guard
-    // instruction and other administrative overhead.
-    ldr(ip, MemOperand(pc, (2 * kInstrSize) - kPcLoadDelta));
-    blx(ip);
-    dd(target_raw);
-  }
-}
-
-int MacroAssembler::CallDeoptimizerSize() {
-  // ARMv7+:
-  //    movw    ip, ...
-  //    movt    ip, ...
-  //    blx     ip              @ This never returns.
-  //
-  // ARMv6:
-  //    ldr     ip, =address
-  //    blx     ip              @ This never returns.
-  //    .word   address
-  return 3 * kInstrSize;
-}
-
 void TurboAssembler::Ret(Condition cond) { bx(lr, cond); }
 
 void TurboAssembler::Drop(int count, Condition cond) {

src/arm/macro-assembler-arm.h

@@ -579,10 +579,6 @@ class MacroAssembler : public TurboAssembler {
   MacroAssembler(Isolate* isolate, void* buffer, int size,
                  CodeObjectRequired create_code_object);
 
-  // Used for patching in calls to the deoptimizer.
-  void CallDeoptimizer(Address target);
-  static int CallDeoptimizerSize();
-
   // Swap two registers.  If the scratch register is omitted then a slightly
   // less efficient form using xor instead of mov is emitted.
   void Swap(Register reg1, Register reg2, Register scratch = no_reg,