[NS A31] Simplification

The condition this is testing for cannot actually be false.

The only place where the code writes a null value into this
map is at the end of computeRequestReassignmentForNetwork :
reassignedRequests.put(nri, null).
This proves the code the if() block, which proves that
newNetwork.isSatisfyingRequest(nri.request.requestId) is true.

By definition newNetwork.isSatisfyingRequest(nri) implies that
nri.mSatifier == newNetwork, which proves that
previousSatisfier == newNetwork whenever newSatisfier is null.

Fixes: 146482072
Test: FrameworksNetTests
Change-Id: Ifd6faedce7d49757b82a5f341076ab208b0ccfcb
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 9b0be06..36afbfb 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -6586,15 +6586,9 @@
                             " request " + nri.request.requestId);
                 }
                 newNetwork.removeRequest(nri.request.requestId);
-                if (previousSatisfier == newNetwork) {
-                    nri.mSatisfier = null;
-                    if (isDefaultRequest(nri)) mDefaultNetworkNai = null;
-                    sendUpdatedScoreToFactories(nri.request, null);
-                } else {
-                    Slog.wtf(TAG, "BUG: Removing request " + nri.request.requestId + " from " +
-                            newNetwork.name() +
-                            " without updating mSatisfier or providers!");
-                }
+                nri.mSatisfier = null;
+                if (isDefaultRequest(nri)) mDefaultNetworkNai = null;
+                sendUpdatedScoreToFactories(nri.request, null);
             }
         }
     }