Revert "[nobug] update .gitignore files for default output folders"

This reverts commit 0929ea76f1775d7c3994eb58efb087ecc8860871.

See bug 454097: EGit adds wrong .gitignore files/entries at project root
diff --git a/org.eclipse.jdt.debug.tests/.gitignore b/org.eclipse.jdt.debug.tests/.gitignore
deleted file mode 100644
index ae3c172..0000000
--- a/org.eclipse.jdt.debug.tests/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/bin/
diff --git a/org.eclipse.jdt.debug.ui/.gitignore b/org.eclipse.jdt.debug.ui/.gitignore
index 055183c..5ef1fd9 100644
--- a/org.eclipse.jdt.debug.ui/.gitignore
+++ b/org.eclipse.jdt.debug.ui/.gitignore
@@ -1,3 +1,2 @@
 /snippetsupport.jar
 /snippet_bin/
-/bin/
diff --git a/org.eclipse.jdt.debug/.gitignore b/org.eclipse.jdt.debug/.gitignore
index 651eec3..2b5da58 100644
--- a/org.eclipse.jdt.debug/.gitignore
+++ b/org.eclipse.jdt.debug/.gitignore
@@ -1,2 +1 @@
 /jdi-bin/
-/bin/
diff --git a/org.eclipse.jdt.launching.macosx/.gitignore b/org.eclipse.jdt.launching.macosx/.gitignore
deleted file mode 100644
index ae3c172..0000000
--- a/org.eclipse.jdt.launching.macosx/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/bin/
diff --git a/org.eclipse.jdt.launching.ui.macosx/.gitignore b/org.eclipse.jdt.launching.ui.macosx/.gitignore
deleted file mode 100644
index ae3c172..0000000
--- a/org.eclipse.jdt.launching.ui.macosx/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/bin/
diff --git a/org.eclipse.jdt.launching/.gitignore b/org.eclipse.jdt.launching/.gitignore
index e5adf99..0007984 100644
--- a/org.eclipse.jdt.launching/.gitignore
+++ b/org.eclipse.jdt.launching/.gitignore
@@ -1,2 +1 @@
 /support_bin/
-/bin/