Delete broken link in MeshInterface.md

Delete broken links so engine can build.

Author: Amanda Butler

docs/reference/api/connectivity/networksocket/MeshInterface.md

@@ -11,16 +11,10 @@ The Arm Mbed mesh API allows the application to use the IPv6 mesh network topolo
 
 **LoWPANNDInterface**
 
-[![View code](https://www.mbed.com/embed/?type=library)](https://os-doc-builder.test.mbed.com/docs/v5.7/mbed-os-api-doxy/class_lo_w_p_a_n_n_d_interface.html)
-
 **ThreadInterface**
 
-[![View code](https://www.mbed.com/embed/?type=library)](https://os-doc-builder.test.mbed.com/docs/v5.7/mbed-os-api-doxy/class_thread_interface.html)
-
 **NanostackEthernetInterface**
 
-[![View code](https://www.mbed.com/embed/?type=library)](https://os-doc-builder.test.mbed.com/docs/v5.7/mbed-os-api-doxy/class_nanostack_ethernet_interface.html)
-
 ### Usage
 
 1. Create a network interface and driver objects.