Updated a caption for consistency, removed an old comment

tools/ncbi_blast_plus/ncbi_blastx_wrapper.xml

@@ -33,7 +33,7 @@
             </when>
             <when value="file">
                 <param name="database" type="hidden" value="" /> 
-                <param name="subject" type="data" format="fasta" label="Protein subject sequence(s)"/> 
+                <param name="subject" type="data" format="fasta" label="Protein FASTA file to use as database"/> 
             </when>
         </conditional>
         <param name="evalue_cutoff" type="float" size="15" value="0.001" label="set expectation value cutoff" />

tools/ncbi_blast_plus/ncbi_tblastn_wrapper.xml

@@ -59,7 +59,6 @@
         </conditional>
     </inputs>
     <outputs>
-        <!-- TODO, can I get the caption rather than the value? e.g. 'NT' rather than a long path? -->
         <data name="output1" format="tabular" label="tblastn on ${db_opts.db_opts_selector}">
             <change_format>
                 <when input="out_format" value="0" format="txt"/>