Fix rm command for class cleanup in r7091
Fix rm command for class cleanup in r7091

In https://webrtc-codereview.appspot.com/20339004
the rm command was missing 'r' for recursive mode.

TBR=henrike@webrtc.org
BUG=

Review URL: https://webrtc-codereview.appspot.com/26379004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@7092 4adac7df-926f-26a2-2b94-8c16560cd09d

PersonifyInc/chromium_webrtc,aleonliao/webrtc-trunk,android-ia/platform_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,jchavanton/webrtc,krieger-od/nwjs_chromium_webrtc,MIPS/external-chromium_org-third_party-webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,Alkalyne/webrtctrunk,Omegaphora/external_chromium_org_third_party_webrtc,sippet/webrtc,sippet/webrtc,PersonifyInc/chromium_webrtc,jchavanton/webrtc,krieger-od/nwjs_chromium_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,krieger-od/webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,krieger-od/nwjs_chromium_webrtc,aleonliao/webrtc-trunk,MIPS/external-chromium_org-third_party-webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,aleonliao/webrtc-trunk,krieger-od/webrtc,jchavanton/webrtc,Omegaphora/external_chromium_org_third_party_webrtc,sippet/webrtc,jchavanton/webrtc,aleonliao/webrtc-trunk,android-ia/platform_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,sippet/webrtc,sippet/webrtc,krieger-od/nwjs_chromium_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,sippet/webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,PersonifyInc/chromium_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,PersonifyInc/chromium_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,krieger-od/nwjs_chromium_webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,aleonliao/webrtc-trunk,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,jchavanton/webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,jchavanton/webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,PersonifyInc/chromium_webrtc,krieger-od/webrtc,Alkalyne/webrtctrunk,jgcaaprom/android_external_chromium_org_third_party_webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,Alkalyne/webrtctrunk,PersonifyInc/chromium_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,geekboxzone/lollipop_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc,Omegaphora/external_chromium_org_third_party_webrtc,jgcaaprom/android_external_chromium_org_third_party_webrtc,Omegaphora/external_chromium_org_third_party_webrtc,android-ia/platform_external_chromium_org_third_party_webrtc,MIPS/external-chromium_org-third_party-webrtc