refactor(report): Don't bother stripping ANSI escape codes

`cargo report` calls `Shell::print_ansi_stdout`.  Previously, it didn't
always strip the colors when needed (e.g. `Write` is used).  Now it
does, so don't need to special case this when generating the report.

Author: epage

src/cargo/core/compiler/future_incompat.rs

@@ -224,6 +224,7 @@ impl OnDiskReports {
         self.reports.last().map(|r| r.id).unwrap()
     }
 
+    /// Returns an ANSI-styled report
     pub fn get_report(
         &self,
         id: u32,
@@ -269,11 +270,6 @@ impl OnDiskReports {
 
         let shell = config.shell();
 
-        let to_display = if shell.err_supports_color() && shell.out_supports_color() {
-            to_display
-        } else {
-            anstream::adapter::strip_str(&to_display).to_string()
-        };
         Ok(to_display)
     }
 }