Removing spec versionning for xrootd packages as we need to test commits

and not standard releases.

cta.spec.in

@@ -37,10 +37,10 @@ BuildRequires: xrootd-client-devel = 1:4.2.3
 BuildRequires: xrootd-devel        = 1:4.2.3
 BuildRequires: cryptopp-devel >= 5.6.2
 %else
-BuildRequires: xrootd-client-devel  = 1:4.7.0
-BuildRequires: xrootd-devel         = 1:4.7.0
-BuildRequires: xrootd-server-devel  = 1:4.7.0
-BuildRequires: xrootd-private-devel = 1:4.7.0
+BuildRequires: xrootd-client-devel
+BuildRequires: xrootd-devel
+BuildRequires: xrootd-server-devel
+BuildRequires: xrootd-private-devel
 BuildRequires: librados-devel >= 11.0, libradosstriper-devel >= 11.0, 
 BuildRequires: protobuf3-compiler >= 3.3.1 protobuf3-devel >= 3.3.1
 BuildRequires: gmock-devel >= 1.5.0 gtest-devel >= 1.5.0