Revert "Add stubs for getting information from the config"

This reverts commit 8f7f89ae10325a2f7f2e64378c3342c14780563b.

libimagstorestdhook/src/vcs/git/config.rs

@@ -8,22 +8,6 @@ use vcs::git::result::Result;
 
 use vcs::git::action::StoreAction;
 
-pub fn author_name(config: &Value) -> Result<&str> {
-    unimplemented!()
-}
-
-pub fn author_mail(config: &Value) -> Result<&str> {
-    unimplemented!()
-}
-
-pub fn committer_name(config: &Value) -> Result<&str> {
-    unimplemented!()
-}
-
-pub fn committer_mail(config: &Value) -> Result<&str> {
-    unimplemented!()
-}
-
 pub fn commit_interactive(config: &Value) -> bool {
     unimplemented!()
 }