cleanup. Remove lines with values stored to variables never used

Summary:
  as found with clang static analysis tool.

Reviewers: billiob, raster

Differential Revision: https://phab.enlightenment.org/D1207

src/bin/termptyesc.c

@@ -1127,7 +1127,6 @@ _handle_esc_xterm(Termpty *ty, const Eina_Unicode *c, Eina_Unicode *ce)
         // XXX: set palette entry. not supported.
         DBG("set palette, not supported");
         if ((cc - c) < 3) return 0;
-        b = &(buf[2]);
         break;
       default:
         // many others

src/bin/termptyops.c

@@ -137,7 +137,6 @@ _termpty_text_scroll_rev(Termpty *ty, Eina_Bool clear)
             cells2 = &(TERMPTY_SCREEN(ty, 0, y));
             termpty_cell_copy(ty, cells, cells2, ty->w);
          }
-       y = start_y;
        if (clear)
           _text_clear(ty, cells, ty->w, 0, EINA_TRUE);
      }

src/bin/termptysave.c

@@ -218,7 +218,6 @@ _save_comp(Termsave *ts)
      }
    else
      {
-        ts2 = ts;
         tsc = (Termsavecomp *)ts;
         ts2 = _mem_new(sizeof(Termsavecomp) + tsc->w);
         if (!ts2)