Remove incorrect priority check

I think this was just poor factoring on my part in facebook#18411. Honestly it
doesn't make much sense to me, but my best guess is that I must have
thought that when `baseTime > currentChildExpirationTime`, the function
would fall through to the
`currentChildExpirationTime < renderExpirationTime` branch below.

Really I think just made an oopsie.

Regardless, this logic is galaxy brainéd. A goal of the Lanes refactor
I'm working on is to make these types of checks -- is there remaining
work in this tree? -- a lot easier to think about. Hopefully.

packages/react-reconciler/src/ReactFiberBeginWork.new.js

@@ -1681,11 +1681,7 @@ function getRemainingWorkInPrimaryTree(
     // This boundary already timed out. Check if this render includes the level
     // that previously suspended.
     const baseTime = currentSuspenseState.baseTime;
-    if (
-      baseTime !== NoWork &&
-      baseTime < renderExpirationTime &&
-      baseTime > currentChildExpirationTime
-    ) {
+    if (baseTime !== NoWork && baseTime < renderExpirationTime) {
       // There's pending work at a lower level that might now be unblocked.
       return baseTime;
     }

packages/react-reconciler/src/ReactFiberBeginWork.old.js

@@ -1681,11 +1681,7 @@ function getRemainingWorkInPrimaryTree(
     // This boundary already timed out. Check if this render includes the level
     // that previously suspended.
     const baseTime = currentSuspenseState.baseTime;
-    if (
-      baseTime !== NoWork &&
-      baseTime < renderExpirationTime &&
-      baseTime > currentChildExpirationTime
-    ) {
+    if (baseTime !== NoWork && baseTime < renderExpirationTime) {
       // There's pending work at a lower level that might now be unblocked.
       return baseTime;
     }