MAINTAINERS: Drop unreachable reviewer for Qualcomm ETHQOS ethernet driver

Bhupesh's email responds indicating they've changed employers and with
no new contact information. Let's drop the line from MAINTAINERS to
avoid getting the same response over and over.
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20240129-remove-dwmac-qcom-ethqos-reviewer-v1-1-2645eab61451@redhat.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

MAINTAINERS

@@ -18085,7 +18085,6 @@ F:	drivers/net/ethernet/qualcomm/emac/
 
 QUALCOMM ETHQOS ETHERNET DRIVER
 M:	Vinod Koul <vkoul@kernel.org>
-R:	Bhupesh Sharma <bhupesh.sharma@linaro.org>
 L:	netdev@vger.kernel.org
 L:	linux-arm-msm@vger.kernel.org
 S:	Maintained