make connectivity service impl and walled check cache singleton

Signed-off-by: alperozturk96 <alper_ozturk@proton.me>

Author: alperozturk96

app/src/main/java/com/nextcloud/client/network/ConnectivityServiceImpl.kt

@@ -36,10 +36,6 @@ class ConnectivityServiceImpl(
 ) : ConnectivityService {
 
     companion object {
-        var instance: ConnectivityServiceImpl? = null
-
-        // todo: remove
-        private var initCount = 0
         private const val TAG = "ConnectivityServiceImpl"
         private const val CONNECTIVITY_CHECK_ROUTE = "/index.php/204"
     }
@@ -70,13 +66,9 @@ class ConnectivityServiceImpl(
     }
     // endregion
 
-
-
     init {
-        initCount += 1
         connectivityManager.registerDefaultNetworkCallback(networkCallback)
         updateConnectivity()
-        Log_OC.d(TAG, "connectivity service constructed: " + initCount)
     }
 
     // region overridden methods

app/src/main/java/com/nextcloud/client/network/WalledCheckCache.kt

@@ -8,12 +8,14 @@
  */
 package com.nextcloud.client.network
 
-import com.nextcloud.client.core.Clock
+import com.nextcloud.client.core.ClockImpl
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class WalledCheckCache @Inject constructor(private val clock: Clock) {
+class WalledCheckCache @Inject constructor() {
+    private val clock = ClockImpl()
+
     private var connectivityCache = mutableMapOf<ConnectivityKey, Connectivity>()
     private val walledStatusCache = mutableMapOf<ConnectivityKey, Pair<Long, Boolean>>()