Remove suspected dead code

Removing it is definitely safe. I suspect that any way to get here would
have already returned from checkRangeRead during the search for the
common prefix

ConflictSet.cpp

@@ -1681,9 +1681,6 @@ bool checkRangeStartsWith(Node *n, std::span<const uint8_t> key, int begin,
 #endif
   auto remaining = key;
   for (;;) {
-    if (maxVersion(n, impl) <= readVersion) {
-      return true;
-    }
     if (remaining.size() == 0) {
       return maxBetweenExclusive(n, begin, end) <= readVersion;
     }