build/pkgs/r/spkg-configure.m4: Remove depcheck

Author: Matthias Koeppe

build/pkgs/r/spkg-configure.m4

@@ -1,7 +1,6 @@
 SAGE_SPKG_CONFIGURE([r], [
     m4_pushdef([SAGE_R_MINVER],["3.4.4"])
-    SAGE_SPKG_DEPCHECK([openblas iconv readline bzip2 liblzma pcre curl], [
-      AS_CASE([$host],
+    AS_CASE([$host],
         [*-*-cygwin*], [
           dnl #29486: rpy2 2.8.x does not build against system R on cygwin.
           sage_spkg_install_r=yes
@@ -16,7 +15,6 @@ SAGE_SPKG_CONFIGURE([r], [
                 sage_spkg_install_r=no
                 ])
          ], [sage_spkg_install_r=yes])
-        ])
     ])
     m4_popdef([SAGE_R_MINVER])
 ])