[mlir][sparse] SparseTensorUtils post-refactoring cleanup

[wrengr]

Summary

This differential corrects a few minor rebasing errors from the recent slew of differentials for factoring out the mlir_sparsetensor_utils library.

mlir/lib/Dialect/SparseTensor/Transforms/CodegenUtils.h

 #ifndef MLIR_DIALECT_SPARSETENSOR_TRANSFORMS_CODEGENUTILS_H_
 #define MLIR_DIALECT_SPARSETENSOR_TRANSFORMS_CODEGENUTILS_H_
 
 #include "mlir/Dialect/Arith/IR/Arith.h"
 #include "mlir/Dialect/Complex/IR/Complex.h"
 #include "mlir/Dialect/SparseTensor/IR/SparseTensor.h"
 #include "mlir/Dialect/Utils/ReshapeOpsUtils.h"
 #include "mlir/ExecutionEngine/SparseTensor/Enums.h"
-#include "mlir/ExecutionEngine/SparseTensorUtils.h"
 #include "mlir/IR/Builders.h"
 
 namespace mlir {
 class Location;
 class Type;
 class Value;
 
 namespace sparse_tensor {

mlir/lib/ExecutionEngine/SparseTensor/File.cpp

case ValueKind::kUndefined:
     return isRealPrimaryType(valTy);
   default:
     MLIR_SPARSETENSOR_FATAL("Unknown ValueKind: %d\n",
                             static_cast<uint8_t>(valueKind_));
   }
 }
 
 /// Helper to convert C-style strings (i.e., '\0' terminated) to lower case.
-static inline char *toLower(char *token) {
+static inline void toLower(char *token) {
   for (char *c = token; *c; ++c)
     *c = tolower(*c);
-  return token;
 }
 
 /// Idiomatic name for checking string equality.
 static inline bool streq(const char *lhs, const char *rhs) {
   return strcmp(lhs, rhs) == 0;
 }
 
 /// Idiomatic name for checking string inequality.

utils/bazel/llvm-project-overlay/mlir/BUILD.bazel

deps = [
         ":SCFTransforms",
         ":SparseTensorDialect",
         ":SparseTensorPassIncGen",
         ":SparseTensorUtils",
         ":Support",
         ":TensorDialect",
         ":Transforms",
         ":VectorDialect",
-        ":_mlir_c_runner_utils",
         ":mlir_sparse_tensor_utils",
         "//llvm:Support",
     ],
 )
 
 cc_library(
     name = "SparseTensorPipelines",
     srcs = glob(["lib/Dialect/SparseTensor/Pipelines/*.cpp"]),