Replace usage of deprecated endpoints

[cartermak]

The following endpoints / actions have been deprecated for several releases and should be replaced:

• getActivityEffectiveArguments
• getSequenceSeqJson
• getUserSequenceSeqJson
• getEdslForSeqJson

Ref. NASA-AMMOS/plandev#1079

[cartermak]

De-scoping from v2 as these aren't actually removed from Aerie as of 1.12.0. See: NASA-AMMOS/plandev#1079 (comment)