[SVE] Adjust PR93183 test-case to compile with -march=armv8.3-a+sve

[Prathamesh Kulkarni via Gcc-patches]

Hi,
The attached patch removes "-mcpu=generic+sve" from dg-options,
because it conflicts
with -march=armv8.3-a+sve, and resulted in:

cc1: warning: switch '-mcpu=generic+sve' conflicts with
'-march=armv8.3-a+sve' switch^M
FAIL: gcc.target/aarch64/sve/pr93183.c (test for excess errors)
Excess errors:
cc1: warning: switch '-mcpu=generic+sve' conflicts with
'-march=armv8.3-a+sve' switch

Is the patch OK to commit ?

Thanks,
Prathamesh

pr93183-test-fix-1.diff
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