Check for and remove internal links to the following urls

[NoopDog]

https://data.humancellatlas.org/favicon-32x32.png
https://data.humancellatlas.org/index/catalogs
https://data.humancellatlas.org/metadata/dictionary/biomaterial/cell_line
https://data.humancellatlas.org/metadata/dictionary/file/analysis_file
https://data.humancellatlas.org/metadata/dictionary/file/sequence_file
https://data.humancellatlas.org/metadata/dictionary/process/analysis_process
https://data.humancellatlas.org/metadata/dictionary/project/project
https://data.humancellatlas.org/metadata/dictionary/protocol/aggregate_generation_protocol
https://data.humancellatlas.org/metadata/dictionary/protocol/sequencing_protocol
https://data.humancellatlas.org/robots.txt