perf: Nit fix to benchmarks (#2884)

Author: cijothomas

.github/workflows/benchmark.yml

@@ -56,5 +56,5 @@ jobs:
       - uses: boa-dev/criterion-compare-action@v3
         with:
           cwd: opentelemetry-sdk
-          features: rt-tokio,testing,metrics,logs,spec_unstable_metrics_views
+          features: testing,metrics,logs,spec_unstable_metrics_views,spec_unstable_logs_enabled,experimental_logs_concurrent_log_processor
           branchName: ${{ env.BRANCH_NAME }}

opentelemetry-sdk/Cargo.toml

@@ -108,7 +108,7 @@ harness = false
 [[bench]]
 name = "batch_span_processor"
 harness = false
-required-features = ["rt-tokio", "testing"]
+required-features = ["testing"]
 
 [[bench]]
 name = "metric"