Simplify AssemblerPositionsRecorder.

src/s390/macro-assembler-s390.cc

Index: src/s390/macro-assembler-s390.cc
diff --git a/src/s390/macro-assembler-s390.cc b/src/s390/macro-assembler-s390.cc
index bf3210738912be4ee6590c510fedd87fe56f3de7..9d62387c855502d0089c6e6342fab35b76acfc9c 100644
--- a/src/s390/macro-assembler-s390.cc
+++ b/src/s390/macro-assembler-s390.cc
@@ -70,10 +70,6 @@ void MacroAssembler::Call(Register target) {
   Label start;
   bind(&start);
 
-  // Statement positions are expected to be recorded when the target
-  // address is loaded.
-  positions_recorder()->WriteRecordedPositions();
-
   // Branch to target via indirect branch
   basr(r14, target);
 
@@ -122,10 +118,6 @@ void MacroAssembler::Call(Address target, RelocInfo::Mode rmode,
   bind(&start);
 #endif
 
-  // Statement positions are expected to be recorded when the target
-  // address is loaded.
-  positions_recorder()->WriteRecordedPositions();
-
   mov(ip, Operand(reinterpret_cast<intptr_t>(target), rmode));
   basr(r14, ip);
 
@@ -4757,7 +4749,6 @@ void MacroAssembler::Branch(Condition c, const Operand& opnd) {
 // Branch On Count.  Decrement R1, and branch if R1 != 0.
 void MacroAssembler::BranchOnCount(Register r1, Label* l) {
   int32_t offset = branch_offset(l);
-  positions_recorder()->WriteRecordedPositions();
   if (is_int16(offset)) {
 #if V8_TARGET_ARCH_S390X
     brctg(r1, Operand(offset));