Salutation is now a separate field on the Edit page layout.
After the Spring '18 Major Release, the 'Salutation' as part of Name field on Contacts edit page will now be a separate picklist field unlike prior releases where 'Salutation' is appended with the 'First Name'.
You may find more details on Contact Standard Fields.
Note:
Picklist values for the Salutation field on Contact object can only be created/edited/reordered/replaced in Salesforce Classic at this time.
The 'Salutation' field is mandatory and cannot be removed from the Edit page's Layout.
Idea Exchange:
Salutation Flag on Lead and Contact Should be Editable in Salesforce Lightning
Remove Salutation from FirstName
000384197

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