Revert of Expose SIMD.Float32x4 type to Javascript.

src/ppc/lithium-codegen-ppc.cc

Index: src/ppc/lithium-codegen-ppc.cc
diff --git a/src/ppc/lithium-codegen-ppc.cc b/src/ppc/lithium-codegen-ppc.cc
index 87e1a8d4966d82a4ddff17af5f2522d22a0d7d57..de2e10eab23804c2990efee205488c6044d81590 100644
--- a/src/ppc/lithium-codegen-ppc.cc
+++ b/src/ppc/lithium-codegen-ppc.cc
@@ -2302,12 +2302,6 @@
       if (expected.Contains(ToBooleanStub::SYMBOL)) {
         // Symbol value -> true.
         __ CompareInstanceType(map, ip, SYMBOL_TYPE);
-        __ beq(instr->TrueLabel(chunk_));
-      }
-
-      if (expected.Contains(ToBooleanStub::SIMD_VALUE)) {
-        // SIMD value -> true.
-        __ CompareInstanceType(map, ip, FLOAT32X4_TYPE);
         __ beq(instr->TrueLabel(chunk_));
       }
 
@@ -5973,11 +5967,6 @@
     __ cmpi(r0, Operand::Zero());
     final_branch_condition = eq;
 
-  } else if (String::Equals(type_name, factory->float32x4_string())) {
-    __ JumpIfSmi(input, false_label);
-    __ CompareObjectType(input, scratch, no_reg, FLOAT32X4_TYPE);
-    final_branch_condition = eq;
-
   } else {
     __ b(false_label);
   }