Removing email references to linux390@de.ibm.com

The Email address linux390@de.ibm.com is about to be sunset.
Cleaning up the last references in man page/help function for:
- mon_tools
- dbginfo.sh

Reviewed-by: Michael Storzer <MSTORZER@de.ibm.com>
Signed-off-by: Joern Siglen <siglen@de.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>

scripts/dbginfo.sh

@@ -119,8 +119,6 @@ Options:
         -v|--version       print version information
         -c|--check         online base system information (no data collection)
 
-Please report bugs to: linux390@de.ibm.com
-
 EOF
 }
 

scripts/dbginfo.sh.8

@@ -125,5 +125,3 @@ Run the script with root authority.
 .br
 For Linux on z/VM, only z/VM guest virtual machines with class B privileges
 yield the complete debug information.
-.SH AUTHOR
-Linux on IBM Z development <linux390@de.ibm.com>