bdwgc: no need to set ARM_INSTRUCTION_SET anymore
bdwgc: no need to set ARM_INSTRUCTION_SET anymore

It was necessary in 2012 (https://patchwork.openembedded.org/patch/26155/),
but it appears to no longer be required.

Signed-off-by: Chris Laplante <4376d65d69af76cbb33d2c085e41a365b9c774cd@agilent.com>
Signed-off-by: Khem Raj <729d64b6f67515e258459a5f6d20ec88b2caf8df@gmail.com>

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