[ROCm][CI] Revert Test Groups From mi325_8 to mi325_1 Agent Pool In AMD CI (#34384)

Signed-off-by: Micah Williamson <micah.williamson@amd.com>

.buildkite/test-amd.yaml

@@ -552,7 +552,7 @@ steps:
 - label: LoRA Test %N # 20min each
   timeout_in_minutes: 30
   mirror_hardwares: [amdexperimental]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   source_file_dependencies:
   - vllm/lora
@@ -648,7 +648,7 @@ steps:
 - label: Kernels Attention Test %N # 23min
   timeout_in_minutes: 35
   mirror_hardwares: [amdexperimental, amdproduction]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   source_file_dependencies:
   - csrc/attention/
@@ -663,7 +663,7 @@ steps:
 - label: Kernels Quantization Test %N # 64min
   timeout_in_minutes: 90
   mirror_hardwares: [amdexperimental]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   source_file_dependencies:
   - csrc/quantization/
@@ -676,7 +676,7 @@ steps:
 - label: Kernels MoE Test %N # 40min
   timeout_in_minutes: 60
   mirror_hardwares: [amdexperimental, amdproduction]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   source_file_dependencies:
   - csrc/quantization/cutlass_w8a8/moe/
@@ -839,7 +839,7 @@ steps:
 - label: Basic Models Tests (Extra Initialization) %N
   timeout_in_minutes: 45
   mirror_hardwares: [amdexperimental, amdproduction]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   torch_nightly: true
   source_file_dependencies:
@@ -901,7 +901,7 @@ steps:
 - label: Language Models Tests (Extra Standard) %N
   timeout_in_minutes: 45
   mirror_hardwares: [amdexperimental]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   torch_nightly: true
   source_file_dependencies:
@@ -922,7 +922,7 @@ steps:
 - label: Language Models Tests (Hybrid) %N
   timeout_in_minutes: 75
   mirror_hardwares: [amdexperimental]
-  agent_pool: mi325_8
+  agent_pool: mi325_1
   # grade: Blocking
   torch_nightly: true
   source_file_dependencies: