Use shared BLAS on CentOS and openSUSE

Note: --enable-BLAS-shlib is already used by default

builder/Dockerfile.centos-6

@@ -4,8 +4,6 @@ ENV OS_IDENTIFIER centos-6
 
 RUN yum -y update \
     && yum -y install \
-    atlas-devel \
-    blas-devel \
     bzip2-devel \
     cairo-devel \
     gcc-c++ \
@@ -16,7 +14,6 @@ RUN yum -y update \
     java-1.8.0-openjdk-devel \
     krb5-devel \
     krb5-libs \
-    lapack-devel \
     libICE-devel \
     libSM-devel \
     libX11-devel \
@@ -184,7 +181,6 @@ ENV CONFIGURE_OPTIONS="\
     --with-system-valgrind-headers \
     --with-tcl-config=/usr/lib64/tclConfig.sh \
     --with-tk-config=/usr/lib64/tkConfig.sh \
-    --enable-BLAS-shlib \
     --enable-prebuilt-html"
 
 # RHEL 6 doesn't have texi2any, so use makeinfo.