Revert "Add TEGRA_AHB into defconfig"

This reverts commit 28fcb59c07c25ad058dce6f1ca04ebcd2ef39fc7.
Revert "ARM: tegra: Add Tegra AHB driver"

This reverts commit 3a2b48aec6a9881ef39f8a3dfece0f3e4be36ca8.