[PTen] Change functions to funcs (#38340)

* change functions to funcs

* remove useless code

paddle/pten/core/tensor_meta.h

@@ -61,8 +61,7 @@ struct DenseTensorMeta {
 };
 
 inline bool operator==(const DenseTensorMeta& lhs, const DenseTensorMeta& rhs) {
-  bool ret = true;
-  return ret && (lhs.is_scalar == rhs.is_scalar) && (lhs.dims == rhs.dims) &&
+  return (lhs.is_scalar == rhs.is_scalar) && (lhs.dims == rhs.dims) &&
          (lhs.dtype == rhs.dtype) && (lhs.layout == rhs.layout) &&
          (lhs.lod == rhs.lod) && (lhs.offset == rhs.offset);
 }

paddle/pten/kernels/flatten_kernel.cc

@@ -17,7 +17,7 @@
 #include "paddle/pten/core/kernel_registry.h"
 #include "paddle/pten/infermeta/unary.h"
 #include "paddle/pten/kernels/cpu/utils.h"
-#include "paddle/pten/kernels/functions/common_shape.h"
+#include "paddle/pten/kernels/funcs/common_shape.h"
 #include "paddle/pten/kernels/gpu/utils.h"
 #include "paddle/pten/kernels/xpu/utils.h"