test.bash, crossbuild.bash: drop old Go version kludges

test.bash, crossbuild.bash: drop old Go version kludges · rfjakob/gocryptfs@13773f4

Original file line number	Diff line number	Diff line change
`@@ -15,7 +15,6 @@ function compile_tests {`
`15`	`15`
`16`	`16`	`set -eux`
`17`	`17`
`18`		`-export GO111MODULE=on`
`19`	`18`	`export CGO_ENABLED=0`
`20`	`19`
`21`	`20`	`GOOS=linux GOARCH=amd64 build`
`@@ -30,8 +29,4 @@ GOOS=darwin GOARCH=amd64 build`
`30`	`29`	`time GOOS=darwin GOARCH=amd64 compile_tests`
`31`	`30`
`32`	`31`	`# MacOS on Apple Silicon M1.`
`33`		`-# Go 1.16 added support for the M1 and added ios/arm64,`
`34`		`-# so we use this to check if we should attempt a build.`
`35`		`-if go tool dist list \| grep ios/arm64 ; then`
`36`		`- GOOS=darwin GOARCH=arm64 build`
`37`		`-fi`
	`32`	`+GOOS=darwin GOARCH=arm64 build`