[LLVMGPU] Drop WorkgroupSpecializationPass #11588

Job	Run time
setup / setup	12s
Build Packages / Linux Release (x86_64)	11m 25s
Test AMD W7900	0s
Unit Test / Linux (x86_64)	37s
Test AMD MI250 / test	4m 34s
Regression Test / test_models :: cpu_llvm_task	5m 53s
Regression Test / test_onnx :: cpu_llvm_sync	3m 15s
Regression Test / test_models :: amdgpu_rocm_mi250_gfx90a	4m 13s
Regression Test / test_regression_suite :: cpu_llvm_task	9m 13s
Regression Test / test_onnx :: amdgpu_rocm_rdna3	7m 24s
Regression Test / test_regression_suite :: amdgpu_rocm_mi250_gfx90a	4m 17s
Regression Test / test_models :: amdgpu_rocm_mi300_gfx942	4m 18s
Regression Test / test_onnx :: amdgpu_vulkan	2m 13s
Regression Test / test_regression_suite :: amdgpu_rocm_mi300_gfx942	6m 2s
Regression Test / test_models :: amdgpu_vulkan	2m 17s
Regression Test / test_onnx :: nvidiagpu_cuda	5m 57s
Regression Test / test_onnx :: nvidiagpu_vulkan	5m 3s
Test AMD MI300 / test	1m 57s
test_android / cross_compile	4m 59s
Test NVIDIA T4 / test	8m 31s
Test TensorFlow CPU / Linux (x86_64)	2m 25s
	1h 34m 45s

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