Remove explicit empty go_lib_deps

This brings us closer to upstream Tor conventions.

projects/gobtcjson/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/hlandauf/btcjson
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gogroupcache/config

@@ -11,7 +11,6 @@ var:
   go_lib: github.com/golang/groupcache
   go_lib_install:
     - github.com/golang/groupcache/lru
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gopflag/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/ogier/pflag
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gosystemd/config

@@ -11,7 +11,6 @@ var:
   go_lib: github.com/coreos/go-systemd
   go_lib_install:
     - github.com/coreos/go-systemd/journal
-  go_lib_deps: []
   build_go_lib_pre: |
     [% IF c("var/linux") %]
       [% pc(c('var/compiler'), 'var/setup', { compiler_tarfile => c('input_files_by_name/' _ c('var/compiler')) }) %]

projects/gotemplate/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/alecthomas/template
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gotext/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/kr/text
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gotoml/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/BurntSushi/toml
-  go_lib_deps: []
 
 input_files:
   - project: container-image

projects/gounits/config

@@ -9,7 +9,6 @@ var:
   container:
     use_container: 1
   go_lib: github.com/alecthomas/units
-  go_lib_deps: []
 
 input_files:
   - project: container-image