gimp: Remove -Qunused-arguments from complier cmdline with clang

This supresses the -msseX argument diagnostics on non-x86 architectures
and meson wrongly decided to enable SSE on these biulds which ends up in

                                   │
│| In file included from ../gimp-3.0.2/app/gegl/gimp-gegl-loops-sse2.c:36:                                                                                                               │
│| /mnt/b/yoe/master/build/tmp/work/riscv64-yoe-linux/gimp/3.0.2/recipe-sysroot-native/usr/lib/clang/20/include/emmintrin.h:14:2: error: "This header is only meant to be used on x86 and│
│ x64 architecture"                                                                                                                                                                      │
│|    14 | #error "This header is only meant to be used on x86 and x64 architecture"                                                                                                     │
│|       |  ^                                                                                                                                                                            │
│| In file included from ../gimp-3.0.2/app/gegl/gimp-gegl-loops-sse2.c:36:

Signed-off-by: Khem Raj <[email protected]>

Author: kraj

conf/nonclangable.conf

@@ -340,6 +340,7 @@ TUNE_CCARGS:remove:pn-tesseract:toolchain-clang = "-Qunused-arguments"
 TUNE_CCARGS:remove:pn-pulseaudio:toolchain-clang = "-Qunused-arguments"
 TUNE_CCARGS:remove:pn-btrfs-tools:toolchain-clang = "-Qunused-arguments"
 TUNE_CCARGS:append:pn-btrfs-tools:toolchain-clang = " -Werror=unused-command-line-argument"
+TUNE_CCARGS:remove:pn-gimp:toolchain-clang = "-Qunused-arguments"
 
 # Disable altivec on ppc32
 #/usr/include/eigen3/Eigen/src/Core/arch/AltiVec/PacketMath.h:1345:32: error: use of undeclared identifier 'vec_sqrt'; did you mean 'vec_rsqrt'?