log_warnings=0 does about nothing in my.ini

Hi, MariaDB 10.4.8 installed under Windows as a service "wampmariadb" In the[wampmariadb] section of the my.ini file, there are, among other things:

log_error="J:/wamp/logs/mariadb.log"
;*** MariaDB does not support the log_error_verbosity system variable added in MySQL 5.7.
;log_warnings=0

There are only three lines less in the log file when logs_warning=0 is not commented:

***********************************************************
************* With ;log_warnings=0 commented **************
InnoDB: using atomic writes.
[Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
[Note] InnoDB: Uses event mutexes
[Note] InnoDB: Compressed tables use zlib 1.2.11
[Note] InnoDB: Number of pools: 1
[Note] InnoDB: Using SSE2 crc32 instructions
[Note] InnoDB: Initializing buffer pool, total size = 256M, instances = 1, chunk size = 128M
[Note] InnoDB: Completed initialization of buffer pool
[Note] InnoDB: 128 out of 128 rollback segments are active.
[Note] InnoDB: Creating shared tablespace for temporary tables
[Note] InnoDB: Setting file '.\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
[Note] InnoDB: File '.\ibtmp1' size is now 12 MB.
[Note] InnoDB: 10.4.8 started; log sequence number 141009; transaction id 21
[Note] InnoDB: Loading buffer pool(s) from g:\wwwbases\maria32_104\ib_buffer_pool
---> [Note] Plugin 'FEEDBACK' is disabled.
[Note] InnoDB: Buffer pool(s) load completed at 191007 15:03:15
[Note] Server socket created on IP: '::'.
---> [Note] Reading of all Master_info entries succeeded
---> [Note] Added new Master_info '' to hash table
[Note] wampmariadb: ready for connections.
Version: '10.4.8-MariaDB'  socket: ''  port: 3306  mariadb.org binary distribution
[Note] wampmariadb (initiated by: unknown): Normal shutdown
[Note] Event Scheduler: Purging the queue. 0 events
[Note] InnoDB: FTS optimize thread exiting.
[Note] InnoDB: Starting shutdown...
[Note] InnoDB: Dumping buffer pool(s) to g:\wwwbases\maria32_104\ib_buffer_pool
[Note] InnoDB: Buffer pool(s) dump completed at 191007 15:03:55
[Note] InnoDB: Shutdown completed; log sequence number 141018; transaction id 22
[Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
[Note] wampmariadb: Shutdown complete

***********************************************************
****************** With log_warnings=0 ********************
InnoDB: using atomic writes.
[Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
[Note] InnoDB: Uses event mutexes
[Note] InnoDB: Compressed tables use zlib 1.2.11
[Note] InnoDB: Number of pools: 1
[Note] InnoDB: Using SSE2 crc32 instructions
[Note] InnoDB: Initializing buffer pool, total size = 256M, instances = 1, chunk size = 128M
[Note] InnoDB: Completed initialization of buffer pool
[Note] InnoDB: 128 out of 128 rollback segments are active.
[Note] InnoDB: Creating shared tablespace for temporary tables
[Note] InnoDB: Setting file '.\ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
[Note] InnoDB: File '.\ibtmp1' size is now 12 MB.
[Note] InnoDB: 10.4.8 started; log sequence number 141018; transaction id 21
[Note] InnoDB: Loading buffer pool(s) from g:\wwwbases\maria32_104\ib_buffer_pool
[Note] InnoDB: Buffer pool(s) load completed at 191007 15:08:45
[Note] Server socket created on IP: '::'.
[Note] wampmariadb: ready for connections.
Version: '10.4.8-MariaDB'  socket: ''  port: 3306  mariadb.org binary distribution
[Note] wampmariadb (initiated by: unknown): Normal shutdown
[Note] Event Scheduler: Purging the queue. 0 events
[Note] InnoDB: FTS optimize thread exiting.
[Note] InnoDB: Starting shutdown...
[Note] InnoDB: Dumping buffer pool(s) to g:\wwwbases\maria32_104\ib_buffer_pool
[Note] InnoDB: Buffer pool(s) dump completed at 191007 15:10:13
[Note] InnoDB: Shutdown completed; log sequence number 141027; transaction id 22
[Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
[Note] wampmariadb: Shutdown complete

In addition, all lines in the log file are fully duplicated in the Windows Event Viewer and this is absolutely useless.

- My first question is: How to really reduce unnecessary information in the log file?

- My second question is: How to remove duplicate and unnecessary entries in the Windows Event Viewer? Thank you.