Remove nullness check for getInputDeps.
The result of ActionExecutionFunction#getInputDeps can no longer be null.
RELNOTES: None
@@ -247,10 +247,6 @@ public class ActionExecutionFunction implements SkyFunction {
ValueOrException3<
IOException, ActionExecutionException, ArtifactNestedSetEvalException>>
inputDeps = getInputDeps(env, allInputs, state);
- // If there's a missing value.
- if (inputDeps == null) {
- return null;
- }
try {
if (previousExecution == null && !state.hasArtifactData()) {
