arm: meson: remove static ethernet memory power domain enable

The ethernet memory power domain is handled by the meson-ee-pwrc driver,
delete the static code.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
diff --git a/arch/arm/mach-meson/board-g12a.c b/arch/arm/mach-meson/board-g12a.c
index bfd40fe..cc7e01d 100644
--- a/arch/arm/mach-meson/board-g12a.c
+++ b/arch/arm/mach-meson/board-g12a.c
@@ -126,9 +126,6 @@
 		printf("Invalid Ethernet interface mode\n");
 		return;
 	}
-
-	/* Enable power gate */
-	clrbits_le32(G12A_MEM_PD_REG_0, G12A_MEM_PD_REG_0_ETH_MASK);
 }
 
 #if CONFIG_IS_ENABLED(USB_DWC3_MESON_G12A) && \
diff --git a/arch/arm/mach-meson/board-gx.c b/arch/arm/mach-meson/board-gx.c
index 876405f..cae7af5 100644
--- a/arch/arm/mach-meson/board-gx.c
+++ b/arch/arm/mach-meson/board-gx.c
@@ -142,9 +142,6 @@
 		printf("Invalid Ethernet interface mode\n");
 		return;
 	}
-
-	/* Enable power gate */
-	clrbits_le32(GX_MEM_PD_REG_0, GX_MEM_PD_REG_0_ETH_MASK);
 }
 
 #if CONFIG_IS_ENABLED(USB_DWC3_MESON_GXL) && \