Hi Sean,
Since you did not describe your method I'm assuming that you have deleted the .html, .json, .ts files from the ..\customerconfigurations\analyst\theme\infotemplates directory.
If so have you also deleted the .ts entry from the ..\customerconfigurations\analyst\CalloutInfoTemplateDefinitions.xml file?
I hope this helps,
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David Murphy
SWAN HILL RURAL CITY COUNCIL
Swan Hill VIC
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