ref(proguard): Delete pointless code (#2263)

We have some code which opens all the proguard files just to compute the
SHA1 sum, which is just debug-logged and then added into a vector, which
is never read from, and which is not needed for any lifetime purposes.
We definitely can get rid of the vector, the debug log is also probably
okay to get rid of because this information can easily be obtained using
the `sha1sum` command

src/commands/upload_proguard.rs

@@ -6,7 +6,7 @@ use anyhow::{bail, Error, Result};
 use clap::ArgAction;
 use clap::{Arg, ArgMatches, Command};
 use console::style;
-use log::{debug, info};
+use log::info;
 use proguard::ProguardMapping;
 use symbolic::common::ByteView;
 use uuid::Uuid;
@@ -16,7 +16,7 @@ use crate::api::AssociateProguard;
 use crate::config::Config;
 use crate::utils::android::dump_proguard_uuids_as_properties;
 use crate::utils::args::ArgExt;
-use crate::utils::fs::{get_sha1_checksum, TempFile};
+use crate::utils::fs::TempFile;
 use crate::utils::system::QuietExit;
 use crate::utils::ui::{copy_with_progress, make_byte_progress_bar};
 
@@ -135,15 +135,13 @@ pub fn make_command(command: Command) -> Command {
 }
 
 pub fn execute(matches: &ArgMatches) -> Result<()> {
-
     let paths: Vec<_> = match matches.get_many::<String>("paths") {
         Some(paths) => paths.collect(),
         None => {
             return Ok(());
         }
     };
     let mut mappings = vec![];
-    let mut all_checksums = vec![];
 
     let forced_uuid = matches.get_one::<Uuid>("uuid");
     if forced_uuid.is_some() && paths.len() != 1 {
@@ -168,10 +166,6 @@ pub fn execute(matches: &ArgMatches) -> Result<()> {
                          does not contain any line information."
                     );
                 } else {
-                    let mut f = fs::File::open(path)?;
-                    let sha = get_sha1_checksum(&mut f)?.to_string();
-                    debug!("SHA1 for mapping file '{}': '{}'", path, sha);
-                    all_checksums.push(sha);
                     mappings.push(MappingRef {
                         path: PathBuf::from(path),
                         size: md.len(),