Remove comments from parser & grammar

libs/parser/rules/pslang.l

@@ -21,7 +21,7 @@ using bp = ::pslang::parser::bison::parser;
 
 [ \r\t]+ { ctx.location.step(); }
 
-"//"[^\n]*  { return bp::make_comment(ctx.location); }
+"//"[^\n]*  { ctx.location.step(); }
 
 const { return bp::make_const(ctx.location); }
 let   { return bp::make_let(ctx.location); }

libs/parser/rules/pslang.y

@@ -74,7 +74,6 @@ template <typename T>
 %define api.token.prefix {tok_}
 
 %token newline "newline"
-%token comment "comment"
 %token assignment "="
 %token colon ":"
 %token comma ","
@@ -228,16 +227,11 @@ statement_block
 ;
 
 statement_line
-: statement optional_comment { $$ = $1; }
+: statement { $$ = $1; }
 ;
 
 empty_line
-: optional_comment
-;
-
-optional_comment
-: comment
-| %empty
+: %empty
 ;
 
 statement