Remove unused err.myc example

Update benchmark output for soa_series.myc.
Also, fix the tester to not panic when a baseline is missing, and
instead just report it as missing.

src/utils/tester.rs

@@ -100,6 +100,9 @@ pub fn run_benchmarks(update: bool, filter: Option<&str>) -> Vec<BenchmarkResult
         let content = fs::read_to_string(&path).unwrap();
 
         let baseline_match = baseline_re.captures(&content);
+        if !update && baseline_match.is_none() {
+            continue;
+        }
         let repeat_match = repeat_re.captures(&content);
 
         let mut repeats = repeat_match
@@ -269,14 +272,6 @@ pub fn run_benchmarks(update: bool, filter: Option<&str>) -> Vec<BenchmarkResult
                 diff_pct: Some(diff * 100.0),
                 status: status.to_string(),
             });
-        } else {
-            results.push(BenchmarkResult {
-                name,
-                median: median_single,
-                baseline: None,
-                diff_pct: None,
-                status: "MISSING BASELINE".to_string(),
-            });
         }
     }
     results