Remove BugReport for `inputValue` in `ArtifactFunction` to avoid continuous ThirdEye reports.

Some artifacts failed (with ActionExecutionException) below here.We have no need to process those exceptions in ArtifactFunction, they should just bubble up.

PiperOrigin-RevId: 438021289
diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactFunction.java b/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactFunction.java
index f734c0d..d6350cc 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactFunction.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/ArtifactFunction.java
@@ -369,9 +369,6 @@
 
       SkyValue inputValue = values.next();
       if (inputValue == null) {
-        BugReport.sendBugReport(
-            new IllegalStateException(
-                "SkyValue " + input + " was missing, this should never happen"));
         return null;
       }
       if (inputValue instanceof FileArtifactValue) {