timeline: remove unnecessary dependencies for timeline v3

JeffersonLab/clas12-timeline#293 removes the
explicit need for `groovy` and `coatjava` as external dependencies; the
Maven build will just copy the necessary JAR files for these, so now the
timeline code is much more standalone. RCDB remains as an external
dependency. See the PR for reasoning and details.

This should not be merged until we have actually deployed v3.

Author: c-dilks

modulefiles/timeline/dev

@@ -3,8 +3,6 @@
 module-whatis https://github.com/jeffersonlab/clas12-timeline
 
 prereq jdk
-prereq groovy
-prereq coatjava
 prereq rcdb
 
 source [file dirname $ModulesCurrentModulefile]/../util/functions.tcl