[mlir] Remove unnecessary casts (NFC) (#147097)

Both ptr and alignedPtr are already of T *.

Author: kazutakahirata

mlir/include/mlir/ExecutionEngine/MemRefUtils.h

@@ -68,8 +68,8 @@ makeStridedMemRefDescriptor(T *ptr, T *alignedPtr, ArrayRef<int64_t> shape,
   assert(shape.size() == N);
   assert(shapeAlloc.size() == N);
   StridedMemRefType<T, N> descriptor;
-  descriptor.basePtr = static_cast<T *>(ptr);
-  descriptor.data = static_cast<T *>(alignedPtr);
+  descriptor.basePtr = ptr;
+  descriptor.data = alignedPtr;
   descriptor.offset = 0;
   std::copy(shape.begin(), shape.end(), descriptor.sizes);
   auto strides = makeStrides<N>(shapeAlloc);
@@ -89,8 +89,8 @@ makeStridedMemRefDescriptor(T *ptr, T *alignedPtr, ArrayRef<int64_t> shape = {},
   assert(shape.size() == N);
   assert(shapeAlloc.size() == N);
   StridedMemRefType<T, 0> descriptor;
-  descriptor.basePtr = static_cast<T *>(ptr);
-  descriptor.data = static_cast<T *>(alignedPtr);
+  descriptor.basePtr = ptr;
+  descriptor.data = alignedPtr;
   descriptor.offset = 0;
   return descriptor;
 }