Amend Ponch's presentation talk title and description

Change-Id: Ie3872aba8af8b824ebe8b108248feb04e57bc521
diff --git a/schedule.md b/schedule.md
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+++ b/schedule.md
@@ -36,7 +36,7 @@
 | 18:45     | 09:45     | [Code Review Research Highlights](sessions/recent-rebels-research.md)
 | 19:30     | 10:00     | End of Day 1 - Sweden / Break & Networking - US
 | 20:00     |           | Dinner - Celebrations for Gerrit 15 years - Sweden
-|           | 10:30     | [Git GC at scale for Pro](sessions/git-gc-at-scale.md)
+|           | 10:30     | [Git Health Service - the headaches of maintaining a Git repo](sessions/git-health-service.md)
 |           | 11:15     | [Un-Splitting Gerrit, detecting and resolving split](sessions/unsplitting-gerrit.md)
 |           | 12:00     | Lunch & Networking
 
diff --git a/sessions/git-gc-at-scale.md b/sessions/git-gc-at-scale.md
deleted file mode 100644
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--- a/sessions/git-gc-at-scale.md
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-# Git GC at scale for Pro
-
-In this talk, I will explain some challenges
-you might encounter when trying to keep your Git repository
-in shape.
-
-I will introduce a new tool I have been working on recently
-to approach the Git GC problem in a more systematic way
-on large-scale systems.
-
-The tool is agnostic of the Git server you are running and
-is flexible enough to smoothly integrate into your ecosystem.
-
-*[Fabio Ponciroli, GerritFroge Inc.](../speakers.md#fponciroli)*
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diff --git a/sessions/git-health-service.md b/sessions/git-health-service.md
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+# GHS (Git Health Service)
+
+In this talk, I will go through some of the issues you might encounter when
+trying to keep your Git repository in shape.
+
+I will discuss the open source tooling available, and introduce a new tool
+GerritForge have been working on recently to approach the Git repo maintenance
+problem in a more systematic way on large-scale systems.
+
+The tool is agnostic of the Git server you are running and
+is flexible enough to smoothly integrate into your ecosystem.
+
+*[Fabio Ponciroli, GerritFroge Inc.](../speakers.md#fponciroli)*
\ No newline at end of file