MAINTAINERS: Remove a few inactive people

It has been a long while since Jagan Teki, Joe Hershberger or Ramon
Fried have been active in the community. We thank them for their time
over the years. Remove them from the active maintainer list and mark a
few things as Orphaned for now.

Signed-off-by: Tom Rini <trini@konsulko.com>

MAINTAINERS

@@ -751,7 +751,6 @@ N:	stm
 N:	stm32
 
 ARM SUNXI
-M:	Jagan Teki <jagan@amarulasolutions.com>
 M:	Andre Przywara <andre.przywara@arm.com>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-sunxi.git
@@ -1147,8 +1146,7 @@ F:	tools/file2include.c
 F:	tools/mkeficapsule.c
 
 ENVIRONMENT
-M:	Joe Hershberger <joe.hershberger@ni.com>
-S:	Maintained
+S:	Orphaned
 F:	env/
 F:	include/env/
 F:	include/env*
@@ -1462,8 +1460,6 @@ F:	drivers/mmc/
 N:	mmc
 
 NETWORK
-M:	Joe Hershberger <joe.hershberger@ni.com>
-M:	Ramon Fried <rfried.dev@gmail.com>
 M:	Jerome Forissier <jerome.forissier@arm.com>
 S:	Maintained
 T:	git https://source.denx.de/u-boot/custodians/u-boot-net.git
@@ -1549,8 +1545,7 @@ F:	drivers/pci/pcie_dw_imx.c
 F:	drivers/phy/phy-imx8m-pcie.c
 
 PCI Endpoint
-M:	Ramon Fried <rfried.dev@gmail.com>
-S:	Maintained
+S:	Orphaned
 F:	drivers/pci_endpoint/
 F:  include/pci_ep.h
 
@@ -1747,8 +1742,7 @@ S:	Maintained
 F:	drivers/rng/smccc_trng.c
 
 SPI
-M:	Jagan Teki <jagan@amarulasolutions.com>
-S:	Maintained
+S:	Orphaned
 T:	git https://source.denx.de/u-boot/custodians/u-boot-spi.git
 F:	drivers/spi/
 F:	include/spi*
@@ -1762,7 +1756,6 @@ T:	git https://source.denx.de/u-boot/custodians/u-boot-nand-flash.git
 F:	drivers/mtd/nand/spi/
 
 SPI-NOR
-M:	Jagan Teki <jagan@amarulasolutions.com>
 M:	Vignesh R <vigneshr@ti.com>
 R:	Tudor Ambarus <tudor.ambarus@linaro.org>
 S:	Maintained