[NFC] Remove obsolete all_passes_registration from integration tests.

After https://reviews.llvm.org/D128593 this is not needed (and not available). Was missed in original landing because integration tests do not run on pre-merge.

Author: stellaraccident

mlir/benchmark/python/common.py

@@ -1,8 +1,6 @@
 """Common utilities that are useful for all the benchmarks."""
 import numpy as np
 
-import mlir.all_passes_registration
-
 from mlir import ir
 from mlir.dialects import arith
 from mlir.dialects import func

mlir/test/Integration/Dialect/SparseTensor/python/tools/sparse_compiler.py

@@ -4,7 +4,6 @@
 
 #  This file contains the sparse compiler class.
 
-from mlir import all_passes_registration
 from mlir import execution_engine
 from mlir import ir
 from mlir import passmanager

mlir/test/Integration/Dialect/SparseTensor/taco/tools/mlir_pytaco_utils.py

@@ -11,7 +11,6 @@
 import os
 
 # Import MLIR related modules.
-from mlir import all_passes_registration  # Register MLIR compiler passes.
 from mlir import execution_engine
 from mlir import ir
 from mlir import runtime

mlir/test/Integration/Dialect/SparseTensor/taco/tools/mlir_sparse_compiler.py

@@ -6,7 +6,6 @@
 #  test/Integration/Dialect/SparseTensor/python/ until we have a better
 #  solution.
 
-from mlir import all_passes_registration
 from mlir import execution_engine
 from mlir import ir
 from mlir import passmanager