mailmap: Remove some duplicates

Fabiano Fidencio was working for Red Hat when he contributed to
libvirt, Shi Lei's non-company email address contains the company
name so it's fair to assume contributions using it were made on
company time, and Adrian Brzezinski's personal email was used
for the S-o-b while the git authorship information clearly pointed
at the company being involved.

Signed-off-by: Andrea Bolognani <[email protected]>
Reviewed-by: Ján Tomko <[email protected]>

Author: andreabolognani

.mailmap

@@ -43,6 +43,10 @@
 <[email protected]> <[email protected]>
 <[email protected]> <[email protected]>
 <[email protected]> <[email protected]>
+<[email protected]> <[email protected]>
+<[email protected]> <[email protected]>
+<[email protected]> <[email protected]>
+<[email protected]> <[email protected]>
 
 # Name consolidation:
 # Preferred author spelling <preferred email>