Cleanup: Remove duplicate quantization checks

stablehlo/dialect/Base.cpp

@@ -751,23 +751,6 @@ bool isValidStablehloQuantizedElementType(Type elementType) {
                   quantizedPerAxisElementType.getScales().end());
   }
 
-  // quantized_type_c6
-  auto maxPosFiniteNum =
-      APFloat::getLargest(
-          cast<FloatType>(quantizedElementType.getExpressedType())
-              .getFloatSemantics())
-          .convertToDouble();
-  auto minPosFiniteNum =
-      APFloat::getSmallest(
-          cast<FloatType>(quantizedElementType.getExpressedType())
-              .getFloatSemantics())
-          .convertToDouble();
-  if (llvm::any_of(scales, [&](double scale) {
-        return scale < minPosFiniteNum || scale > maxPosFiniteNum;
-      })) {
-    return false;
-  }
-
   // quantized_type_c7, quantized_type_c8
   if (llvm::any_of(zeroPoints, [&](int64_t zeroPoint) {
         return storageTypeMin > zeroPoint || zeroPoint > storageTypeMax;
@@ -788,11 +771,11 @@ bool isValidQuantizedDimension(Type type) {
 
   if (!quantizedPerAxisElementType) return true;
 
-  // quantized_type_c11, quantized_type_c12, quantized_type_c13
+  // quantized_type_c12, quantized_type_c13
   int64_t quantDim = quantizedPerAxisElementType.getQuantizedDimension();
   int64_t numScales =
       static_cast<int64_t>(quantizedPerAxisElementType.getScales().size());
-  return quantDim >= 0 && quantDim < rankedType.getRank() &&
+  return quantDim < rankedType.getRank() &&
          (!rankedType.isDynamicDim(quantDim) &&
           numScales == rankedType.getDimSize(quantDim));
 }