gcc: Remove duplicate files

pkgs/development/compilers/gcc/gnat-cflags.patch

@@ -0,0 +1,33 @@
+diff --git a/libada/Makefile.in b/libada/Makefile.in
+index f5057a0..337e0c6 100644
+--- a/libada/Makefile.in
++++ b/libada/Makefile.in
+@@ -55,7 +55,7 @@ GCC_WARN_CFLAGS = $(LOOSE_WARN)
+ WARN_CFLAGS = @warn_cflags@
+ 
+ TARGET_LIBGCC2_CFLAGS=
+-GNATLIBCFLAGS= -g -O2
++GNATLIBCFLAGS= -g -O2 $(CFLAGS)
+ GNATLIBCFLAGS_FOR_C = $(GNATLIBCFLAGS) $(TARGET_LIBGCC2_CFLAGS) -fexceptions \
+ 	-DIN_RTS @have_getipinfo@
+ 
+--- a/gcc/ada/gcc-interface/Makefile.in
++++ b/gcc/ada/gcc-interface/Makefile.in
+@@ -105,7 +105,7 @@ ADAFLAGS = -W -Wall -gnatpg -gnata
+ SOME_ADAFLAGS =-gnata
+ FORCE_DEBUG_ADAFLAGS = -g
+ GNATLIBFLAGS = -gnatpg -nostdinc
+-GNATLIBCFLAGS = -g -O2
++GNATLIBCFLAGS = -g -O2 $(CFLAGS_FOR_TARGET)
+ # Pretend that _Unwind_GetIPInfo is available for the target by default.  This
+ # should be autodetected during the configuration of libada and passed down to
+ # here, but we need something for --disable-libada and hope for the best.
+@@ -193,7 +193,7 @@ RTSDIR = rts$(subst /,_,$(MULTISUBDIR))
+ # Link flags used to build gnat tools.  By default we prefer to statically
+ # link with libgcc to avoid a dependency on shared libgcc (which is tricky
+ # to deal with as it may conflict with the libgcc provided by the system).
+-GCC_LINK_FLAGS=-static-libgcc
++GCC_LINK_FLAGS=-static-libgcc $(CFLAGS_FOR_TARGET)
+ 
+ # End of variables for you to override.
+