Use throw instead of rethrowing an exception

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/SqlInternalConnectionTds.cs

@@ -448,7 +448,7 @@ internal SqlInternalConnectionTds(
                             || _timeout.MillisecondsRemaining < transientRetryIntervalInMilliSeconds
                             || !IsTransientError(sqlex))
                         {
-                            throw sqlex;
+                            throw;
                         }
                         else
                         {

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/SqlInternalConnectionTds.cs

@@ -473,7 +473,7 @@ internal SqlInternalConnectionTds(
                               || _timeout.MillisecondsRemaining < transientRetryIntervalInMilliSeconds
                               || !IsTransientError(sqlex))
                             {
-                                throw sqlex;
+                                throw;
                             }
                             else
                             {

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/TdsParser.cs

@@ -10218,7 +10218,7 @@ internal Task TdsExecuteRPC(SqlCommand cmd, _SqlRPC[] rpcArray, int timeout, boo
                 }
                 else
                 {
-                    throw e;
+                    throw;
                 }
             }
             finally

src/Microsoft.Data.SqlClient/tests/tools/TDS/TDS.EndPoint/TDSClientEndPoint.cs

@@ -105,7 +105,7 @@ public void Connect()
                         if (e.ErrorCode != 10057)
                         {
                             // We don't recognize it
-                            throw e;
+                            throw;
                         }
 
                         // We are going to retry with IPv6 now because of won't fix bug