rts: drop unused 'traverseAllRetainerSet'

While at is mark 'printRetainer' as 'static'.

Noticed by uselex.rb:
    printRetainer: [R]: exported from:
        ./rts/dist/build/RetainerSet.p_o
    traverseAllRetainerSet: [R]: exported from:
        ./rts/dist/build/RetainerSet.p_o

Signed-off-by: Sergei Trofimovich <siarheit@google.com>

docs/storage-mgt/rp.tex

@@ -510,8 +510,6 @@ \subsection{Retainer sets and the cost function}
 is created. Otherwise, a new retainer set is created.
 \item[@rtsBool isMember(retainer r, retainerSet *rs)@] returns a boolean value
 indicating whether @r@ is a member of @rs@.
-\item[@void traverseAllRetainerSet(void (*f)(retainerSet *))@] invokes the function
-@f@ on every retainer set created.
 \item[@void printRetainerSetShort(FILE *, retainerSet *)@] prints a single retainer
 set.
 \item[@void outputRetainerSet(FILE *, nat *allCost, nat *numSet)@] prints all 

rts/RetainerSet.c

@@ -214,43 +214,27 @@ addElement(retainer r, RetainerSet *rs)
     return nrs;
 }
 
-/* -----------------------------------------------------------------------------
- *  Call f() for each retainer set.
- * -------------------------------------------------------------------------- */
-void
-traverseAllRetainerSet(void (*f)(RetainerSet *))
-{
-    int i;
-    RetainerSet *rs;
-
-    (*f)(&rs_MANY);
-    for (i = 0; i < HASH_TABLE_SIZE; i++)
-        for (rs = hashTable[i]; rs != NULL; rs = rs->link)
-            (*f)(rs);
-}
-
-
 /* -----------------------------------------------------------------------------
  *  printRetainer() prints the full information on a given retainer,
  *  not a retainer set.
  * -------------------------------------------------------------------------- */
 #if defined(RETAINER_SCHEME_INFO)
 // Retainer scheme 1: retainer = info table
-void
+static void
 printRetainer(FILE *f, retainer itbl)
 {
     fprintf(f, "%s[%s]", GET_PROF_DESC(itbl), itbl->prof.closure_type);
 }
 #elif defined(RETAINER_SCHEME_CCS)
 // Retainer scheme 2: retainer = cost centre stack
-void
+static void
 printRetainer(FILE *f, retainer ccs)
 {
     fprintCCS(f, ccs);
 }
 #elif defined(RETAINER_SCHEME_CC)
 // Retainer scheme 3: retainer = cost centre
-void
+static void
 printRetainer(FILE *f, retainer cc)
 {
     fprintf(f,"%s.%s", cc->module, cc->label);

rts/RetainerSet.h

@@ -160,9 +160,6 @@ isMember(retainer r, RetainerSet *rs)
 // Finds or creates a retainer set augmented with a new retainer.
 RetainerSet *addElement(retainer, RetainerSet *);
 
-// Call f() for each retainer set.
-void traverseAllRetainerSet(void (*f)(RetainerSet *));
-
 #ifdef SECOND_APPROACH
 // Prints a single retainer set.
 void printRetainerSetShort(FILE *, RetainerSet *, nat);
@@ -194,11 +191,6 @@ void outputAllRetainerSet(FILE *);
 #define hashKeySingleton(r)       ((StgWord)(r))
 #define hashKeyAddElement(r, s)   (hashKeySingleton((r)) + (s)->hashKey)
 
-// Prints the full information on a given retainer.
-// Note: This function is not part of retainerSet interface, but this is
-//       the best place to define it.
-void printRetainer(FILE *, retainer);
-
 #include "EndPrivate.h"
 
 #endif /* PROFILING */