Revert "glibc: Add a temporary hack in abilists loading due to sparcel removal."

This reverts commit 62a01851d9c433ea3f2e98cc986e75d32aece443.

No longer needed with the abilists update.

src/glibc.zig

@@ -122,17 +122,6 @@ pub fn loadMetaData(gpa: Allocator, contents: []const u8) LoadMetaDataError!*ABI
                 return error.ZigInstallationCorrupt;
             };
             const arch_tag = std.meta.stringToEnum(std.Target.Cpu.Arch, arch_name) orelse {
-                // TODO: Remove this on the next glibc abilists update.
-                if (mem.eql(u8, arch_name, "sparcel")) {
-                    targets[i] = .{
-                        .arch = .sparc,
-                        .os = .linux,
-                        .abi = .gnu,
-                    };
-
-                    continue;
-                }
-
                 log.err("abilists: unrecognized arch: '{s}'", .{arch_name});
                 return error.ZigInstallationCorrupt;
             };