Remove internal GetBase64Data helper (#422) #307

Job	Run time
build (ubuntu-latest, Release)	2m 26s
build (windows-latest, Debug)	4m 36s
build (macos-latest, Debug)	1m 42s
build (macos-latest, Release)	2m 20s
build (ubuntu-latest, Debug)	2m 19s
build (windows-latest, Release)	4m 4s
publish-coverage	-1s
	17m 26s

Provide feedback