Revert "Synchronize arbitrary data list removals, as it seems that SynchronizedList and SynchronizedMap aren't overriding removeIf() with a thread-safe version."

This reverts commit e5f88fe2f4.

src/main/java/org/qortal/controller/arbitrary/ArbitraryDataBuildManager.java

@@ -75,13 +75,9 @@ public class ArbitraryDataBuildManager extends Thread {
         if (now == null) {
             return;
         }
-        synchronized (arbitraryDataBuildQueue) {
         arbitraryDataBuildQueue.entrySet().removeIf(entry -> entry.getValue().hasReachedBuildTimeout(now));
-        }
-        synchronized (arbitraryDataFailedBuilds) {
         arbitraryDataFailedBuilds.entrySet().removeIf(entry -> entry.getValue().hasReachedFailureTimeout(now));
     }
-    }
 
     // Build queue
 

src/main/java/org/qortal/controller/arbitrary/ArbitraryDataFileListManager.java

@@ -84,10 +84,8 @@ public class ArbitraryDataFileListManager {
             return;
         }
         final long requestMinimumTimestamp = now - ArbitraryDataManager.ARBITRARY_REQUEST_TIMEOUT;
-        synchronized (arbitraryDataFileListRequests) {
         arbitraryDataFileListRequests.entrySet().removeIf(entry -> entry.getValue().getC() == null || entry.getValue().getC() < requestMinimumTimestamp);
     }
-    }
 
 
     // Track file list lookups by signature

src/main/java/org/qortal/controller/arbitrary/ArbitraryDataFileManager.java

@@ -101,23 +101,15 @@ public class ArbitraryDataFileManager extends Thread {
             return;
         }
         final long requestMinimumTimestamp = now - ArbitraryDataManager.getInstance().ARBITRARY_REQUEST_TIMEOUT;
-        synchronized (arbitraryDataFileRequests) {
         arbitraryDataFileRequests.entrySet().removeIf(entry -> entry.getValue() == null || entry.getValue() < requestMinimumTimestamp);
-        }
 
         final long relayMinimumTimestamp = now - ArbitraryDataManager.getInstance().ARBITRARY_RELAY_TIMEOUT;
-        synchronized (arbitraryRelayMap) {
         arbitraryRelayMap.removeIf(entry -> entry == null || entry.getTimestamp() == null || entry.getTimestamp() < relayMinimumTimestamp);
-        }
-        synchronized (arbitraryDataFileHashResponses) {
         arbitraryDataFileHashResponses.removeIf(entry -> entry.getTimestamp() < relayMinimumTimestamp);
-        }
 
         final long directConnectionInfoMinimumTimestamp = now - ArbitraryDataManager.getInstance().ARBITRARY_DIRECT_CONNECTION_INFO_TIMEOUT;
-        synchronized (directConnectionInfo) {
         directConnectionInfo.removeIf(entry -> entry.getTimestamp() < directConnectionInfoMinimumTimestamp);
     }
-    }
 
 
 
@@ -492,10 +484,8 @@ public class ArbitraryDataFileManager extends Thread {
     }
 
     private void removeFromRelayMap(ArbitraryRelayInfo entry) {
-        synchronized (arbitraryRelayMap) {
         arbitraryRelayMap.removeIf(relayInfo -> relayInfo.equals(entry));
     }
-    }
 
 
     // Network handlers

src/main/java/org/qortal/controller/arbitrary/ArbitraryDataRenderManager.java

@@ -56,10 +56,8 @@ public class ArbitraryDataRenderManager extends Thread {
             return;
         }
         final long minimumTimestamp = now - AUTHORIZATION_TIMEOUT;
-        synchronized (this.authorizedResources) {
         this.authorizedResources.entrySet().removeIf(entry -> entry.getValue() == null || entry.getValue() < minimumTimestamp);
     }
-    }
 
     public boolean isAuthorized(ArbitraryDataResource resource) {
         ArbitraryDataResource broadResource = new ArbitraryDataResource(resource.getResourceId(), null, null, null);

src/main/java/org/qortal/controller/arbitrary/ArbitraryMetadataManager.java

@@ -73,10 +73,8 @@ public class ArbitraryMetadataManager {
             return;
         }
         final long requestMinimumTimestamp = now - ArbitraryDataManager.ARBITRARY_REQUEST_TIMEOUT;
-        synchronized (arbitraryMetadataRequests) {
         arbitraryMetadataRequests.entrySet().removeIf(entry -> entry.getValue().getC() == null || entry.getValue().getC() < requestMinimumTimestamp);
     }
-    }
 
 
     public ArbitraryDataTransactionMetadata fetchMetadata(ArbitraryDataResource arbitraryDataResource, boolean useRateLimiter) {