cmd/age: enable PTY tests on Darwin

cmd/age/testdata/batchpass.txt

@@ -42,7 +42,6 @@ stderr 'incompatible recipients'
 
 # decrypt with native scrypt
 [!linux] [!darwin] skip # no pty support
-[darwin] [go1.20] skip # https://go.dev/issue/61779
 ttyin terminal
 age -d test.age
 cmp stdout input

cmd/age/testdata/encrypted_keys.txt

@@ -2,7 +2,6 @@
 # age file password prompt during encryption
 
 [!linux] [!darwin] skip # no pty support
-[darwin] [go1.20] skip # https://go.dev/issue/61779
 
 # use an encrypted OpenSSH private key without .pub file
 age -R key_ed25519.pub -o ed25519.age input

cmd/age/testdata/output_file.txt

@@ -60,7 +60,6 @@ stderr 'input and output file are the same'
 cmp key.txt keycopy
 
 [!linux] [!darwin] skip # no pty support
-[darwin] [go1.20] skip # https://go.dev/issue/61779
 
 ttyin terminal
 ! age -p -o inputcopy inputcopy

cmd/age/testdata/scrypt.txt

@@ -1,5 +1,4 @@
 [!linux] [!darwin] skip # no pty support
-[darwin] [go1.20] skip # https://go.dev/issue/61779
 
 # encrypt with a provided passphrase
 stdin input

cmd/age/testdata/terminal.txt

@@ -1,5 +1,4 @@
 [!linux] [!darwin] skip # no pty support
-[darwin] [go1.20] skip # https://go.dev/issue/61779
 
 # controlling terminal is used instead of stdin/stderr
 ttyin terminal