Revert "render_thread: Attempt to set affinity to a random fast core"

Revert "render_thread: Attempt to set affinity to a random fast core"

This reverts commit a17ac66f0a0b089dde0b2e550523b0d59ec97f52.

This change broke every efl build locally, as well as on Jenkins, for me.

CLD     lib/ethumb_client/libethumb_client.la
/bin/sh: line 2: 10047 Segmentation fault      (core dumped) EFL_RUN_IN_TREE=1
../src/bin/edje/edje_cc -id . -fd . -id ./tests/emotion/data tests/emotion/data/theme.edc
tests/emotion/data/theme.edj
Makefile:52584: recipe for target 'tests/emotion/data/theme.edj' failed
make[4]: *** [tests/emotion/data/theme.edj] Error 139
make[4]: *** Waiting for unfinished jobs....
/bin/sh: line 2: 10088 Segmentation fault      (core dumped) EFL_RUN_IN_TREE=1
../src/bin/edje/edje_cc -id . -fd . -id ./modules/ethumb/emotion modules/ethumb/emotion/template.edc
modules/ethumb/emotion/template.edj
Makefile:52590: recipe for target 'modules/ethumb/emotion/template.edj' failed
make[4]: *** [modules/ethumb/emotion/template.edj] Error 139
/bin/sh: line 2: 10119 Segmentation fault      (core dumped) EFL_RUN_IN_TREE=1
../src/bin/edje/edje_cc -id . -fd . -id ../src/modules/elementary/prefs/
modules/elementary/prefs/elm_prefs_swallow.edc modules/elementary/prefs/elm_prefs_swallow.edj
Makefile:52614: recipe for target 'modules/elementary/prefs/elm_prefs_swallow.edj' failed
make[4]: *** [modules/elementary/prefs/elm_prefs_swallow.edj] Error 139