[3872] remove some doubled words

src/bin/dhcp4/dhcp4_messages.mes

@@ -329,7 +329,7 @@ identification information. The second argument specifies the hostname.
 The third argument contains the error details.
 
 % DHCP4_NCR_CREATE %1: DDNS updates enabled, therefore sending name change requests
-This debug message message is issued when the server is starting to send
+This debug message is issued when the server is starting to send
 name change requests to the D2 module to update records for the client
 in the DNS. This includes removal of old records and addition of the
 new records as required. Details of the name change requests will be

src/bin/dhcp6/dhcp6_messages.mes

@@ -724,7 +724,7 @@ That could either mean missing functionality or invalid or broken relay or clien
 The list of formally defined message types is available here:
 http://www.iana.org/assignments/dhcpv6-parameters.
 
-% DHCP6_USING_SERVERID server is using server-id %1 and stores in the the file %2
+% DHCP6_USING_SERVERID server is using server-id %1 and stores in the file %2
 This info message is logged when the server reads its server-id from a
 file or generates it. This message is a notification to the administrator
 what server-id will be used and where it is persisted. Typically, there is

src/lib/dhcpsrv/alloc_engine_messages.mes

@@ -242,7 +242,7 @@ Alternatively, if the you know that the number of concurrently active
 clients is less than the addresses you have available, you may want to
 consider reducing the lease lifetime.  In this way, addresses allocated
 to clients that are no longer active on the network will become available
-available sooner.
+sooner.
 
 % ALLOC_ENGINE_V6_ALLOC_HR_LEASE_EXISTS %1: lease type %2 for reserved address/prefix %3 already exists
 This debug message is issued when the allocation engine determines that
@@ -337,11 +337,11 @@ the lease using the client's hint because the lease for this hint
 is reserved for another client. The first argument includes the
 client identification information.
 
-% ALLOC_ENGINE_V6_HR_ADDR_GRANTED reserved address %1 was was assigned to client %2
+% ALLOC_ENGINE_V6_HR_ADDR_GRANTED reserved address %1 was assigned to client %2
 This informational message signals that the specified client was assigned the address
 reserved for it.
 
-% ALLOC_ENGINE_V6_HR_PREFIX_GRANTED reserved prefix %1/%2 was was assigned to client %3
+% ALLOC_ENGINE_V6_HR_PREFIX_GRANTED reserved prefix %1/%2 was assigned to client %3
 This informational message signals that the specified client was assigned the prefix
 reserved for it.
 

src/lib/dhcpsrv/dhcpsrv_messages.mes

@@ -371,7 +371,7 @@ configures the LFC to be executed periodically. The argument holds the
 interval in seconds in which the LFC will be executed.
 
 % DHCPSRV_MEMFILE_LFC_SPAWN_FAIL lease file cleanup failed to run because kea-lfc process couldn't be spawned
-This error message is logged when the the Kea server fails to run kea-lfc,
+This error message is logged when the Kea server fails to run kea-lfc,
 the program that cleans up the lease file. The server will try again the
 next time a lease file cleanup is scheduled. Although this message should
 not appear and the reason why it did investigated, the occasional failure
@@ -393,7 +393,7 @@ A warning message issued when the schema of the lease file loaded by the server
 is newer than the memfile schema of the server.  The server converts the lease
 data from newer schemas to its schema as it is read, therefore the lease
 information in use by the server will be correct. Note though, that any data
-data stored in newer schema fields will be dropped.  What remains is for the
+stored in newer schema fields will be dropped.  What remains is for the
 file itself to be rewritten using the current schema.
 
 % DHCPSRV_MEMFILE_NEEDS_UPGRADING version of lease file: %1 schema is earlier than version %2