chore(ci): remove usage of undefined vars

[lerouxb]

These vars don't exist so they came through as blank strings.

See https://parsley.mongodb.com/evergreen/10gen_compass_main_package_macos_arm_package_compass_patch_95949cf2e090251f37a6a793c598e3101879c634_674f6a425ca1110007a29caa_24_12_03_20_29_56/0/task?bookmarks=0,2540,2542,7858&shareLine=2540

They are not part of default expansions: https://docs.devprod.prod.corp.mongodb.com/evergreen/Project-Configuration/Project-Configuration-Files#default-expansions

They are getting default values here

compass/packages/hadron-build/lib/target.js

Lines 121 to 126 in 117c32f

	_.defaults(opts, { version: process.env.HADRON_APP_VERSION }, pkg, {
	platform: process.platform,
	arch: process.arch,
	sign: true,
	distribution,
	});