[glibc] Remove references to the defunct db2 subdir

[glibc] Remove references to the defunct db2 subdir

[Andreas Schwab]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ce99601fa883a8916cb902c7bcd2125046a4a39d

commit ce99601fa883a8916cb902c7bcd2125046a4a39d
Author: Andreas Schwab <schwab@linux-m68k.org>
Date:   Fri Aug 18 21:10:29 2023 +0200

    Remove references to the defunct db2 subdir
    
    The db2 subdir has been removed more than 20 years ago.

Diff:
---
 sysdeps/alpha/Makefile              | 4 ----
 sysdeps/m68k/m680x0/m68020/Makefile | 3 ---
 sysdeps/sparc/Makefile              | 4 ----
 3 files changed, 11 deletions(-)

diff --git a/sysdeps/alpha/Makefile b/sysdeps/alpha/Makefile
index dbf9f5d877..89a866b8e2 100644
--- a/sysdeps/alpha/Makefile
+++ b/sysdeps/alpha/Makefile
@@ -15,10 +15,6 @@
 # License along with the GNU C Library.  If not, see
 # <https://www.gnu.org/licenses/>.
 
-ifeq ($(subdir),db2)
-CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_ALPHA=1
-endif
-
 ifeq ($(subdir),debug)
 # Consider making this GCC's default...
 CFLAGS-backtrace.c = -fasynchronous-unwind-tables
diff --git a/sysdeps/m68k/m680x0/m68020/Makefile b/sysdeps/m68k/m680x0/m68020/Makefile
deleted file mode 100644
index b17635467d..0000000000
--- a/sysdeps/m68k/m680x0/m68020/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-ifeq ($(subdir),db2)
-CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_MC68020_GCC=1
-endif
diff --git a/sysdeps/sparc/Makefile b/sysdeps/sparc/Makefile
index 26b4a84606..34c51cea6b 100644
--- a/sysdeps/sparc/Makefile
+++ b/sysdeps/sparc/Makefile
@@ -5,10 +5,6 @@ ifeq ($(subdir),gmon)
 sysdep_routines += sparc-mcount
 endif
 
-ifeq ($(subdir),db2)
-CPPFLAGS += -DHAVE_SPINLOCKS=1 -DHAVE_ASSEM_SPARC_GCC=1
-endif
-
 ifeq ($(subdir),csu)
 CPPFLAGS-crti.S += -fPIC
 CPPFLAGS-crtn.S += -fPIC