Revert "make/lib/gluegen-cpptasks-linux-armv6[hf].xml: Set property 'useGCCARMTargetArchAndFloatOptions' indicating ARM arch & float gcc options are desired."

This reverts commit 025795f5011b374e5d6a5ab254e9d5a594d83595.

Extra state/property is not required since we can utilize propery 'isCrosscompilation'