dt-bindings: Drop Beniamin Bia and Stefan Popa

Emails to Beniamin Bia and Stefan Popa bounce ("550 5.1.10
RESOLVER.ADR.RecipientNotFound; Recipient not found by SMTP address
lookup").

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220809162752.10186-4-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/hwmon/adi,adm1177.yaml

@@ -8,7 +8,6 @@ title: Analog Devices ADM1177 Hot Swap Controller and Digital Power Monitor
 
 maintainers:
   - Michael Hennerich <michael.hennerich@analog.com>
-  - Beniamin Bia <beniamin.bia@analog.com>
 
 description: |
   Analog Devices ADM1177 Hot Swap Controller and Digital Power Monitor

Documentation/devicetree/bindings/iio/adc/adi,ad7091r5.yaml

@@ -7,7 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Analog Devices AD7091R5 4-Channel 12-Bit ADC
 
 maintainers:
-  - Beniamin Bia <beniamin.bia@analog.com>
+  - Michael Hennerich <michael.hennerich@analog.com>
 
 description: |
   Analog Devices AD7091R5 4-Channel 12-Bit ADC

Documentation/devicetree/bindings/iio/adc/adi,ad7606.yaml

@@ -7,8 +7,7 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 title: Analog Devices AD7606 Simultaneous Sampling ADC
 
 maintainers:
-  - Beniamin Bia <beniamin.bia@analog.com>
-  - Stefan Popa <stefan.popa@analog.com>
+  - Michael Hennerich <michael.hennerich@analog.com>
 
 description: |
   Analog Devices AD7606 Simultaneous Sampling ADC

Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml

@@ -8,7 +8,6 @@ title: HMC425A 6-bit Digital Step Attenuator
 
 maintainers:
   - Michael Hennerich <michael.hennerich@analog.com>
-  - Beniamin Bia <beniamin.bia@analog.com>
 
 description: |
   Digital Step Attenuator IIO device with gpio interface.